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                                <h1 id="module">Module</h1>
<p>&#x7531;&#x4E8E;&#x4F7F;&#x7528;&#x5355;&#x4E00;&#x72B6;&#x6001;&#x6811;&#xFF0C;&#x5E94;&#x7528;&#x7684;&#x6240;&#x6709;&#x72B6;&#x6001;&#x4F1A;&#x96C6;&#x4E2D;&#x5230;&#x4E00;&#x4E2A;&#x6BD4;&#x8F83;&#x5927;&#x7684;&#x5BF9;&#x8C61;&#x3002;&#x5F53;&#x5E94;&#x7528;&#x53D8;&#x5F97;&#x975E;&#x5E38;&#x590D;&#x6742;&#x65F6;&#xFF0C;store &#x5BF9;&#x8C61;&#x5C31;&#x6709;&#x53EF;&#x80FD;&#x53D8;&#x5F97;&#x76F8;&#x5F53;&#x81C3;&#x80BF;&#x3002;</p>
<p>&#x4E3A;&#x4E86;&#x89E3;&#x51B3;&#x4EE5;&#x4E0A;&#x95EE;&#x9898;&#xFF0C;Vuex &#x5141;&#x8BB8;&#x6211;&#x4EEC;&#x5C06; store &#x5206;&#x5272;&#x6210;<strong>&#x6A21;&#x5757;&#xFF08;module&#xFF09;</strong>&#x3002;&#x6BCF;&#x4E2A;&#x6A21;&#x5757;&#x62E5;&#x6709;&#x81EA;&#x5DF1;&#x7684; state&#x3001;mutation&#x3001;action&#x3001;getter&#x3001;&#x751A;&#x81F3;&#x662F;&#x5D4C;&#x5957;&#x5B50;&#x6A21;&#x5757;&#x2014;&#x2014;&#x4ECE;&#x4E0A;&#x81F3;&#x4E0B;&#x8FDB;&#x884C;&#x540C;&#x6837;&#x65B9;&#x5F0F;&#x7684;&#x5206;&#x5272;&#xFF1A;</p>
<pre class="language-"><code class="lang-js"><span class="token keyword">const</span> moduleA <span class="token operator">=</span> <span class="token punctuation">{</span>
  state<span class="token punctuation">:</span> <span class="token punctuation">{</span> <span class="token operator">...</span> <span class="token punctuation">}</span><span class="token punctuation">,</span>
  mutations<span class="token punctuation">:</span> <span class="token punctuation">{</span> <span class="token operator">...</span> <span class="token punctuation">}</span><span class="token punctuation">,</span>
  actions<span class="token punctuation">:</span> <span class="token punctuation">{</span> <span class="token operator">...</span> <span class="token punctuation">}</span><span class="token punctuation">,</span>
  getters<span class="token punctuation">:</span> <span class="token punctuation">{</span> <span class="token operator">...</span> <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token keyword">const</span> moduleB <span class="token operator">=</span> <span class="token punctuation">{</span>
  state<span class="token punctuation">:</span> <span class="token punctuation">{</span> <span class="token operator">...</span> <span class="token punctuation">}</span><span class="token punctuation">,</span>
  mutations<span class="token punctuation">:</span> <span class="token punctuation">{</span> <span class="token operator">...</span> <span class="token punctuation">}</span><span class="token punctuation">,</span>
  actions<span class="token punctuation">:</span> <span class="token punctuation">{</span> <span class="token operator">...</span> <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token keyword">const</span> store <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Vuex<span class="token punctuation">.</span>Store</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
  modules<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    a<span class="token punctuation">:</span> moduleA<span class="token punctuation">,</span>
    b<span class="token punctuation">:</span> moduleB
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>

store<span class="token punctuation">.</span>state<span class="token punctuation">.</span>a <span class="token comment" spellcheck="true">// -&gt; moduleA &#x7684;&#x72B6;&#x6001;</span>
store<span class="token punctuation">.</span>state<span class="token punctuation">.</span>b <span class="token comment" spellcheck="true">// -&gt; moduleB &#x7684;&#x72B6;&#x6001;</span>
</code></pre>
<h3 id="&#x6A21;&#x5757;&#x7684;&#x5C40;&#x90E8;&#x72B6;&#x6001;">&#x6A21;&#x5757;&#x7684;&#x5C40;&#x90E8;&#x72B6;&#x6001;</h3>
<p>&#x5BF9;&#x4E8E;&#x6A21;&#x5757;&#x5185;&#x90E8;&#x7684; mutation &#x548C; getter&#xFF0C;&#x63A5;&#x6536;&#x7684;&#x7B2C;&#x4E00;&#x4E2A;&#x53C2;&#x6570;&#x662F;<strong>&#x6A21;&#x5757;&#x7684;&#x5C40;&#x90E8;&#x72B6;&#x6001;&#x5BF9;&#x8C61;</strong>&#x3002;</p>
<pre class="language-"><code class="lang-js"><span class="token keyword">const</span> moduleA <span class="token operator">=</span> <span class="token punctuation">{</span>
  state<span class="token punctuation">:</span> <span class="token punctuation">{</span> count<span class="token punctuation">:</span> <span class="token number">0</span> <span class="token punctuation">}</span><span class="token punctuation">,</span>
  mutations<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    increment <span class="token punctuation">(</span>state<span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token comment" spellcheck="true">// &#x8FD9;&#x91CC;&#x7684; `state` &#x5BF9;&#x8C61;&#x662F;&#x6A21;&#x5757;&#x7684;&#x5C40;&#x90E8;&#x72B6;&#x6001;</span>
      state<span class="token punctuation">.</span>count<span class="token operator">++</span>
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span><span class="token punctuation">,</span>

  getters<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    doubleCount <span class="token punctuation">(</span>state<span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token keyword">return</span> state<span class="token punctuation">.</span>count <span class="token operator">*</span> <span class="token number">2</span>
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre>
<p>&#x540C;&#x6837;&#xFF0C;&#x5BF9;&#x4E8E;&#x6A21;&#x5757;&#x5185;&#x90E8;&#x7684; action&#xFF0C;&#x5C40;&#x90E8;&#x72B6;&#x6001;&#x901A;&#x8FC7; <code>context.state</code> &#x66B4;&#x9732;&#x51FA;&#x6765;&#xFF0C;&#x6839;&#x8282;&#x70B9;&#x72B6;&#x6001;&#x5219;&#x4E3A; <code>context.rootState</code>&#xFF1A;</p>
<pre class="language-"><code class="lang-js"><span class="token keyword">const</span> moduleA <span class="token operator">=</span> <span class="token punctuation">{</span>
  <span class="token comment" spellcheck="true">// ...</span>
  actions<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    incrementIfOddOnRootSum <span class="token punctuation">(</span><span class="token punctuation">{</span> state<span class="token punctuation">,</span> commit<span class="token punctuation">,</span> rootState <span class="token punctuation">}</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token punctuation">(</span>state<span class="token punctuation">.</span>count <span class="token operator">+</span> rootState<span class="token punctuation">.</span>count<span class="token punctuation">)</span> <span class="token operator">%</span> <span class="token number">2</span> <span class="token operator">===</span> <span class="token number">1</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
        <span class="token function">commit</span><span class="token punctuation">(</span><span class="token string">&apos;increment&apos;</span><span class="token punctuation">)</span>
      <span class="token punctuation">}</span>
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre>
<p>&#x5BF9;&#x4E8E;&#x6A21;&#x5757;&#x5185;&#x90E8;&#x7684; getter&#xFF0C;&#x6839;&#x8282;&#x70B9;&#x72B6;&#x6001;&#x4F1A;&#x4F5C;&#x4E3A;&#x7B2C;&#x4E09;&#x4E2A;&#x53C2;&#x6570;&#x66B4;&#x9732;&#x51FA;&#x6765;&#xFF1A;</p>
<pre class="language-"><code class="lang-js"><span class="token keyword">const</span> moduleA <span class="token operator">=</span> <span class="token punctuation">{</span>
  <span class="token comment" spellcheck="true">// ...</span>
  getters<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    sumWithRootCount <span class="token punctuation">(</span>state<span class="token punctuation">,</span> getters<span class="token punctuation">,</span> rootState<span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token keyword">return</span> state<span class="token punctuation">.</span>count <span class="token operator">+</span> rootState<span class="token punctuation">.</span>count
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre>
<h3 id="&#x547D;&#x540D;&#x7A7A;&#x95F4;">&#x547D;&#x540D;&#x7A7A;&#x95F4;</h3>
<p>&#x9ED8;&#x8BA4;&#x60C5;&#x51B5;&#x4E0B;&#xFF0C;&#x6A21;&#x5757;&#x5185;&#x90E8;&#x7684; action&#x3001;mutation &#x548C; getter &#x662F;&#x6CE8;&#x518C;&#x5728;<strong>&#x5168;&#x5C40;&#x547D;&#x540D;&#x7A7A;&#x95F4;</strong>&#x7684;&#x2014;&#x2014;&#x8FD9;&#x6837;&#x4F7F;&#x5F97;&#x591A;&#x4E2A;&#x6A21;&#x5757;&#x80FD;&#x591F;&#x5BF9;&#x540C;&#x4E00; mutation &#x6216; action &#x4F5C;&#x51FA;&#x54CD;&#x5E94;&#x3002;</p>
<p>&#x5982;&#x679C;&#x5E0C;&#x671B;&#x4F60;&#x7684;&#x6A21;&#x5757;&#x5177;&#x6709;&#x66F4;&#x9AD8;&#x7684;&#x5C01;&#x88C5;&#x5EA6;&#x548C;&#x590D;&#x7528;&#x6027;&#xFF0C;&#x4F60;&#x53EF;&#x4EE5;&#x901A;&#x8FC7;&#x6DFB;&#x52A0; <code>namespaced: true</code> &#x7684;&#x65B9;&#x5F0F;&#x4F7F;&#x5176;&#x6210;&#x4E3A;&#x5E26;&#x547D;&#x540D;&#x7A7A;&#x95F4;&#x7684;&#x6A21;&#x5757;&#x3002;&#x5F53;&#x6A21;&#x5757;&#x88AB;&#x6CE8;&#x518C;&#x540E;&#xFF0C;&#x5B83;&#x7684;&#x6240;&#x6709; getter&#x3001;action &#x53CA; mutation &#x90FD;&#x4F1A;&#x81EA;&#x52A8;&#x6839;&#x636E;&#x6A21;&#x5757;&#x6CE8;&#x518C;&#x7684;&#x8DEF;&#x5F84;&#x8C03;&#x6574;&#x547D;&#x540D;&#x3002;&#x4F8B;&#x5982;&#xFF1A;</p>
<pre class="language-"><code class="lang-js"><span class="token keyword">const</span> store <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Vuex<span class="token punctuation">.</span>Store</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
  modules<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    account<span class="token punctuation">:</span> <span class="token punctuation">{</span>
      namespaced<span class="token punctuation">:</span> <span class="token boolean">true</span><span class="token punctuation">,</span>

      <span class="token comment" spellcheck="true">// &#x6A21;&#x5757;&#x5185;&#x5BB9;&#xFF08;module assets&#xFF09;</span>
      state<span class="token punctuation">:</span> <span class="token punctuation">{</span> <span class="token operator">...</span> <span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token comment" spellcheck="true">// &#x6A21;&#x5757;&#x5185;&#x7684;&#x72B6;&#x6001;&#x5DF2;&#x7ECF;&#x662F;&#x5D4C;&#x5957;&#x7684;&#x4E86;&#xFF0C;&#x4F7F;&#x7528; `namespaced` &#x5C5E;&#x6027;&#x4E0D;&#x4F1A;&#x5BF9;&#x5176;&#x4EA7;&#x751F;&#x5F71;&#x54CD;</span>
      getters<span class="token punctuation">:</span> <span class="token punctuation">{</span>
        isAdmin <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span> <span class="token operator">...</span> <span class="token punctuation">}</span> <span class="token comment" spellcheck="true">// -&gt; getters[&apos;account/isAdmin&apos;]</span>
      <span class="token punctuation">}</span><span class="token punctuation">,</span>
      actions<span class="token punctuation">:</span> <span class="token punctuation">{</span>
        login <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span> <span class="token operator">...</span> <span class="token punctuation">}</span> <span class="token comment" spellcheck="true">// -&gt; dispatch(&apos;account/login&apos;)</span>
      <span class="token punctuation">}</span><span class="token punctuation">,</span>
      mutations<span class="token punctuation">:</span> <span class="token punctuation">{</span>
        login <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span> <span class="token operator">...</span> <span class="token punctuation">}</span> <span class="token comment" spellcheck="true">// -&gt; commit(&apos;account/login&apos;)</span>
      <span class="token punctuation">}</span><span class="token punctuation">,</span>

      <span class="token comment" spellcheck="true">// &#x5D4C;&#x5957;&#x6A21;&#x5757;</span>
      modules<span class="token punctuation">:</span> <span class="token punctuation">{</span>
        <span class="token comment" spellcheck="true">// &#x7EE7;&#x627F;&#x7236;&#x6A21;&#x5757;&#x7684;&#x547D;&#x540D;&#x7A7A;&#x95F4;</span>
        myPage<span class="token punctuation">:</span> <span class="token punctuation">{</span>
          state<span class="token punctuation">:</span> <span class="token punctuation">{</span> <span class="token operator">...</span> <span class="token punctuation">}</span><span class="token punctuation">,</span>
          getters<span class="token punctuation">:</span> <span class="token punctuation">{</span>
            profile <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span> <span class="token operator">...</span> <span class="token punctuation">}</span> <span class="token comment" spellcheck="true">// -&gt; getters[&apos;account/profile&apos;]</span>
          <span class="token punctuation">}</span>
        <span class="token punctuation">}</span><span class="token punctuation">,</span>

        <span class="token comment" spellcheck="true">// &#x8FDB;&#x4E00;&#x6B65;&#x5D4C;&#x5957;&#x547D;&#x540D;&#x7A7A;&#x95F4;</span>
        posts<span class="token punctuation">:</span> <span class="token punctuation">{</span>
          namespaced<span class="token punctuation">:</span> <span class="token boolean">true</span><span class="token punctuation">,</span>

          state<span class="token punctuation">:</span> <span class="token punctuation">{</span> <span class="token operator">...</span> <span class="token punctuation">}</span><span class="token punctuation">,</span>
          getters<span class="token punctuation">:</span> <span class="token punctuation">{</span>
            popular <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span> <span class="token operator">...</span> <span class="token punctuation">}</span> <span class="token comment" spellcheck="true">// -&gt; getters[&apos;account/posts/popular&apos;]</span>
          <span class="token punctuation">}</span>
        <span class="token punctuation">}</span>
      <span class="token punctuation">}</span>
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>
</code></pre>
<p>&#x542F;&#x7528;&#x4E86;&#x547D;&#x540D;&#x7A7A;&#x95F4;&#x7684; getter &#x548C; action &#x4F1A;&#x6536;&#x5230;&#x5C40;&#x90E8;&#x5316;&#x7684; <code>getter</code>&#xFF0C;<code>dispatch</code> &#x548C; <code>commit</code>&#x3002;&#x6362;&#x8A00;&#x4E4B;&#xFF0C;&#x4F60;&#x5728;&#x4F7F;&#x7528;&#x6A21;&#x5757;&#x5185;&#x5BB9;&#xFF08;module assets&#xFF09;&#x65F6;&#x4E0D;&#x9700;&#x8981;&#x5728;&#x540C;&#x4E00;&#x6A21;&#x5757;&#x5185;&#x989D;&#x5916;&#x6DFB;&#x52A0;&#x7A7A;&#x95F4;&#x540D;&#x524D;&#x7F00;&#x3002;&#x66F4;&#x6539; <code>namespaced</code> &#x5C5E;&#x6027;&#x540E;&#x4E0D;&#x9700;&#x8981;&#x4FEE;&#x6539;&#x6A21;&#x5757;&#x5185;&#x7684;&#x4EE3;&#x7801;&#x3002;</p>
<h4 id="&#x5728;&#x5E26;&#x547D;&#x540D;&#x7A7A;&#x95F4;&#x7684;&#x6A21;&#x5757;&#x5185;&#x8BBF;&#x95EE;&#x5168;&#x5C40;&#x5185;&#x5BB9;&#xFF08;global-assets&#xFF09;">&#x5728;&#x5E26;&#x547D;&#x540D;&#x7A7A;&#x95F4;&#x7684;&#x6A21;&#x5757;&#x5185;&#x8BBF;&#x95EE;&#x5168;&#x5C40;&#x5185;&#x5BB9;&#xFF08;Global Assets&#xFF09;</h4>
<p>&#x5982;&#x679C;&#x4F60;&#x5E0C;&#x671B;&#x4F7F;&#x7528;&#x5168;&#x5C40; state &#x548C; getter&#xFF0C;<code>rootState</code> &#x548C; <code>rootGetter</code> &#x4F1A;&#x4F5C;&#x4E3A;&#x7B2C;&#x4E09;&#x548C;&#x7B2C;&#x56DB;&#x53C2;&#x6570;&#x4F20;&#x5165; getter&#xFF0C;&#x4E5F;&#x4F1A;&#x901A;&#x8FC7; <code>context</code> &#x5BF9;&#x8C61;&#x7684;&#x5C5E;&#x6027;&#x4F20;&#x5165; action&#x3002;</p>
<p>&#x82E5;&#x9700;&#x8981;&#x5728;&#x5168;&#x5C40;&#x547D;&#x540D;&#x7A7A;&#x95F4;&#x5185;&#x5206;&#x53D1; action &#x6216;&#x63D0;&#x4EA4; mutation&#xFF0C;&#x5C06; <code>{ root: true }</code> &#x4F5C;&#x4E3A;&#x7B2C;&#x4E09;&#x53C2;&#x6570;&#x4F20;&#x7ED9; <code>dispatch</code> &#x6216; <code>commit</code> &#x5373;&#x53EF;&#x3002;</p>
<pre class="language-"><code class="lang-js">modules<span class="token punctuation">:</span> <span class="token punctuation">{</span>
  foo<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    namespaced<span class="token punctuation">:</span> <span class="token boolean">true</span><span class="token punctuation">,</span>

    getters<span class="token punctuation">:</span> <span class="token punctuation">{</span>
      <span class="token comment" spellcheck="true">// &#x5728;&#x8FD9;&#x4E2A;&#x6A21;&#x5757;&#x7684; getter &#x4E2D;&#xFF0C;`getters` &#x88AB;&#x5C40;&#x90E8;&#x5316;&#x4E86;</span>
      <span class="token comment" spellcheck="true">// &#x4F60;&#x53EF;&#x4EE5;&#x4F7F;&#x7528; getter &#x7684;&#x7B2C;&#x56DB;&#x4E2A;&#x53C2;&#x6570;&#x6765;&#x8C03;&#x7528; `rootGetters`</span>
      someGetter <span class="token punctuation">(</span>state<span class="token punctuation">,</span> getters<span class="token punctuation">,</span> rootState<span class="token punctuation">,</span> rootGetters<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        getters<span class="token punctuation">.</span>someOtherGetter <span class="token comment" spellcheck="true">// -&gt; &apos;foo/someOtherGetter&apos;</span>
        rootGetters<span class="token punctuation">.</span>someOtherGetter <span class="token comment" spellcheck="true">// -&gt; &apos;someOtherGetter&apos;</span>
      <span class="token punctuation">}</span><span class="token punctuation">,</span>
      someOtherGetter<span class="token punctuation">:</span> state <span class="token operator">=</span><span class="token operator">&gt;</span> <span class="token punctuation">{</span> <span class="token operator">...</span> <span class="token punctuation">}</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span>

    actions<span class="token punctuation">:</span> <span class="token punctuation">{</span>
      <span class="token comment" spellcheck="true">// &#x5728;&#x8FD9;&#x4E2A;&#x6A21;&#x5757;&#x4E2D;&#xFF0C; dispatch &#x548C; commit &#x4E5F;&#x88AB;&#x5C40;&#x90E8;&#x5316;&#x4E86;</span>
      <span class="token comment" spellcheck="true">// &#x4ED6;&#x4EEC;&#x53EF;&#x4EE5;&#x63A5;&#x53D7; `root` &#x5C5E;&#x6027;&#x4EE5;&#x8BBF;&#x95EE;&#x6839; dispatch &#x6216; commit</span>
      someAction <span class="token punctuation">(</span><span class="token punctuation">{</span> dispatch<span class="token punctuation">,</span> commit<span class="token punctuation">,</span> getters<span class="token punctuation">,</span> rootGetters <span class="token punctuation">}</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
        getters<span class="token punctuation">.</span>someGetter <span class="token comment" spellcheck="true">// -&gt; &apos;foo/someGetter&apos;</span>
        rootGetters<span class="token punctuation">.</span>someGetter <span class="token comment" spellcheck="true">// -&gt; &apos;someGetter&apos;</span>

        <span class="token function">dispatch</span><span class="token punctuation">(</span><span class="token string">&apos;someOtherAction&apos;</span><span class="token punctuation">)</span> <span class="token comment" spellcheck="true">// -&gt; &apos;foo/someOtherAction&apos;</span>
        <span class="token function">dispatch</span><span class="token punctuation">(</span><span class="token string">&apos;someOtherAction&apos;</span><span class="token punctuation">,</span> <span class="token keyword">null</span><span class="token punctuation">,</span> <span class="token punctuation">{</span> root<span class="token punctuation">:</span> <span class="token boolean">true</span> <span class="token punctuation">}</span><span class="token punctuation">)</span> <span class="token comment" spellcheck="true">// -&gt; &apos;someOtherAction&apos;</span>

        <span class="token function">commit</span><span class="token punctuation">(</span><span class="token string">&apos;someMutation&apos;</span><span class="token punctuation">)</span> <span class="token comment" spellcheck="true">// -&gt; &apos;foo/someMutation&apos;</span>
        <span class="token function">commit</span><span class="token punctuation">(</span><span class="token string">&apos;someMutation&apos;</span><span class="token punctuation">,</span> <span class="token keyword">null</span><span class="token punctuation">,</span> <span class="token punctuation">{</span> root<span class="token punctuation">:</span> <span class="token boolean">true</span> <span class="token punctuation">}</span><span class="token punctuation">)</span> <span class="token comment" spellcheck="true">// -&gt; &apos;someMutation&apos;</span>
      <span class="token punctuation">}</span><span class="token punctuation">,</span>
      someOtherAction <span class="token punctuation">(</span>ctx<span class="token punctuation">,</span> payload<span class="token punctuation">)</span> <span class="token punctuation">{</span> <span class="token operator">...</span> <span class="token punctuation">}</span>
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre>
<h4 id="&#x5728;&#x5E26;&#x547D;&#x540D;&#x7A7A;&#x95F4;&#x7684;&#x6A21;&#x5757;&#x6CE8;&#x518C;&#x5168;&#x5C40;-action">&#x5728;&#x5E26;&#x547D;&#x540D;&#x7A7A;&#x95F4;&#x7684;&#x6A21;&#x5757;&#x6CE8;&#x518C;&#x5168;&#x5C40; action</h4>
<p>&#x82E5;&#x9700;&#x8981;&#x5728;&#x5E26;&#x547D;&#x540D;&#x7A7A;&#x95F4;&#x7684;&#x6A21;&#x5757;&#x6CE8;&#x518C;&#x5168;&#x5C40; action&#xFF0C;&#x4F60;&#x53EF;&#x6DFB;&#x52A0; <code>root: true</code>&#xFF0C;&#x5E76;&#x5C06;&#x8FD9;&#x4E2A; action &#x7684;&#x5B9A;&#x4E49;&#x653E;&#x5728;&#x51FD;&#x6570; <code>handler</code> &#x4E2D;&#x3002;&#x4F8B;&#x5982;&#xFF1A;</p>
<pre class="language-"><code class="lang-js"><span class="token punctuation">{</span>
  actions<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    someOtherAction <span class="token punctuation">(</span><span class="token punctuation">{</span>dispatch<span class="token punctuation">}</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token function">dispatch</span><span class="token punctuation">(</span><span class="token string">&apos;someAction&apos;</span><span class="token punctuation">)</span>
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
  modules<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    foo<span class="token punctuation">:</span> <span class="token punctuation">{</span>
      namespaced<span class="token punctuation">:</span> <span class="token boolean">true</span><span class="token punctuation">,</span>

      actions<span class="token punctuation">:</span> <span class="token punctuation">{</span>
        someAction<span class="token punctuation">:</span> <span class="token punctuation">{</span>
          root<span class="token punctuation">:</span> <span class="token boolean">true</span><span class="token punctuation">,</span>
          handler <span class="token punctuation">(</span>namespacedContext<span class="token punctuation">,</span> payload<span class="token punctuation">)</span> <span class="token punctuation">{</span> <span class="token operator">...</span> <span class="token punctuation">}</span> <span class="token comment" spellcheck="true">// -&gt; &apos;someAction&apos;</span>
        <span class="token punctuation">}</span>
      <span class="token punctuation">}</span>
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre>
<h4 id="&#x5E26;&#x547D;&#x540D;&#x7A7A;&#x95F4;&#x7684;&#x7ED1;&#x5B9A;&#x51FD;&#x6570;">&#x5E26;&#x547D;&#x540D;&#x7A7A;&#x95F4;&#x7684;&#x7ED1;&#x5B9A;&#x51FD;&#x6570;</h4>
<p>&#x5F53;&#x4F7F;&#x7528; <code>mapState</code>, <code>mapGetters</code>, <code>mapActions</code> &#x548C; <code>mapMutations</code> &#x8FD9;&#x4E9B;&#x51FD;&#x6570;&#x6765;&#x7ED1;&#x5B9A;&#x5E26;&#x547D;&#x540D;&#x7A7A;&#x95F4;&#x7684;&#x6A21;&#x5757;&#x65F6;&#xFF0C;&#x5199;&#x8D77;&#x6765;&#x53EF;&#x80FD;&#x6BD4;&#x8F83;&#x7E41;&#x7410;&#xFF1A;</p>
<pre class="language-"><code class="lang-js">computed<span class="token punctuation">:</span> <span class="token punctuation">{</span>
  <span class="token operator">...</span><span class="token function">mapState</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
    a<span class="token punctuation">:</span> state <span class="token operator">=</span><span class="token operator">&gt;</span> state<span class="token punctuation">.</span>some<span class="token punctuation">.</span>nested<span class="token punctuation">.</span>module<span class="token punctuation">.</span>a<span class="token punctuation">,</span>
    b<span class="token punctuation">:</span> state <span class="token operator">=</span><span class="token operator">&gt;</span> state<span class="token punctuation">.</span>some<span class="token punctuation">.</span>nested<span class="token punctuation">.</span>module<span class="token punctuation">.</span>b
  <span class="token punctuation">}</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span><span class="token punctuation">,</span>
methods<span class="token punctuation">:</span> <span class="token punctuation">{</span>
  <span class="token operator">...</span><span class="token function">mapActions</span><span class="token punctuation">(</span><span class="token punctuation">[</span>
    <span class="token string">&apos;some/nested/module/foo&apos;</span><span class="token punctuation">,</span>
    <span class="token string">&apos;some/nested/module/bar&apos;</span>
  <span class="token punctuation">]</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span>
</code></pre>
<p>&#x5BF9;&#x4E8E;&#x8FD9;&#x79CD;&#x60C5;&#x51B5;&#xFF0C;&#x4F60;&#x53EF;&#x4EE5;&#x5C06;&#x6A21;&#x5757;&#x7684;&#x7A7A;&#x95F4;&#x540D;&#x79F0;&#x5B57;&#x7B26;&#x4E32;&#x4F5C;&#x4E3A;&#x7B2C;&#x4E00;&#x4E2A;&#x53C2;&#x6570;&#x4F20;&#x9012;&#x7ED9;&#x4E0A;&#x8FF0;&#x51FD;&#x6570;&#xFF0C;&#x8FD9;&#x6837;&#x6240;&#x6709;&#x7ED1;&#x5B9A;&#x90FD;&#x4F1A;&#x81EA;&#x52A8;&#x5C06;&#x8BE5;&#x6A21;&#x5757;&#x4F5C;&#x4E3A;&#x4E0A;&#x4E0B;&#x6587;&#x3002;&#x4E8E;&#x662F;&#x4E0A;&#x9762;&#x7684;&#x4F8B;&#x5B50;&#x53EF;&#x4EE5;&#x7B80;&#x5316;&#x4E3A;&#xFF1A;</p>
<pre class="language-"><code class="lang-js">computed<span class="token punctuation">:</span> <span class="token punctuation">{</span>
  <span class="token operator">...</span><span class="token function">mapState</span><span class="token punctuation">(</span><span class="token string">&apos;some/nested/module&apos;</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>
    a<span class="token punctuation">:</span> state <span class="token operator">=</span><span class="token operator">&gt;</span> state<span class="token punctuation">.</span>a<span class="token punctuation">,</span>
    b<span class="token punctuation">:</span> state <span class="token operator">=</span><span class="token operator">&gt;</span> state<span class="token punctuation">.</span>b
  <span class="token punctuation">}</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span><span class="token punctuation">,</span>
methods<span class="token punctuation">:</span> <span class="token punctuation">{</span>
  <span class="token operator">...</span><span class="token function">mapActions</span><span class="token punctuation">(</span><span class="token string">&apos;some/nested/module&apos;</span><span class="token punctuation">,</span> <span class="token punctuation">[</span>
    <span class="token string">&apos;foo&apos;</span><span class="token punctuation">,</span>
    <span class="token string">&apos;bar&apos;</span>
  <span class="token punctuation">]</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span>
</code></pre>
<p>&#x800C;&#x4E14;&#xFF0C;&#x4F60;&#x53EF;&#x4EE5;&#x901A;&#x8FC7;&#x4F7F;&#x7528; <code>createNamespacedHelpers</code> &#x521B;&#x5EFA;&#x57FA;&#x4E8E;&#x67D0;&#x4E2A;&#x547D;&#x540D;&#x7A7A;&#x95F4;&#x8F85;&#x52A9;&#x51FD;&#x6570;&#x3002;&#x5B83;&#x8FD4;&#x56DE;&#x4E00;&#x4E2A;&#x5BF9;&#x8C61;&#xFF0C;&#x5BF9;&#x8C61;&#x91CC;&#x6709;&#x65B0;&#x7684;&#x7ED1;&#x5B9A;&#x5728;&#x7ED9;&#x5B9A;&#x547D;&#x540D;&#x7A7A;&#x95F4;&#x503C;&#x4E0A;&#x7684;&#x7EC4;&#x4EF6;&#x7ED1;&#x5B9A;&#x8F85;&#x52A9;&#x51FD;&#x6570;&#xFF1A;</p>
<pre class="language-"><code class="lang-js"><span class="token keyword">import</span> <span class="token punctuation">{</span> createNamespacedHelpers <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">&apos;vuex&apos;</span>

<span class="token keyword">const</span> <span class="token punctuation">{</span> mapState<span class="token punctuation">,</span> mapActions <span class="token punctuation">}</span> <span class="token operator">=</span> <span class="token function">createNamespacedHelpers</span><span class="token punctuation">(</span><span class="token string">&apos;some/nested/module&apos;</span><span class="token punctuation">)</span>

<span class="token keyword">export</span> <span class="token keyword">default</span> <span class="token punctuation">{</span>
  computed<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    <span class="token comment" spellcheck="true">// &#x5728; `some/nested/module` &#x4E2D;&#x67E5;&#x627E;</span>
    <span class="token operator">...</span><span class="token function">mapState</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
      a<span class="token punctuation">:</span> state <span class="token operator">=</span><span class="token operator">&gt;</span> state<span class="token punctuation">.</span>a<span class="token punctuation">,</span>
      b<span class="token punctuation">:</span> state <span class="token operator">=</span><span class="token operator">&gt;</span> state<span class="token punctuation">.</span>b
    <span class="token punctuation">}</span><span class="token punctuation">)</span>
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
  methods<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    <span class="token comment" spellcheck="true">// &#x5728; `some/nested/module` &#x4E2D;&#x67E5;&#x627E;</span>
    <span class="token operator">...</span><span class="token function">mapActions</span><span class="token punctuation">(</span><span class="token punctuation">[</span>
      <span class="token string">&apos;foo&apos;</span><span class="token punctuation">,</span>
      <span class="token string">&apos;bar&apos;</span>
    <span class="token punctuation">]</span><span class="token punctuation">)</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre>
<h4 id="&#x7ED9;&#x63D2;&#x4EF6;&#x5F00;&#x53D1;&#x8005;&#x7684;&#x6CE8;&#x610F;&#x4E8B;&#x9879;">&#x7ED9;&#x63D2;&#x4EF6;&#x5F00;&#x53D1;&#x8005;&#x7684;&#x6CE8;&#x610F;&#x4E8B;&#x9879;</h4>
<p>&#x5982;&#x679C;&#x4F60;&#x5F00;&#x53D1;&#x7684;<a href="plugins.html">&#x63D2;&#x4EF6;&#xFF08;Plugin&#xFF09;</a>&#x63D0;&#x4F9B;&#x4E86;&#x6A21;&#x5757;&#x5E76;&#x5141;&#x8BB8;&#x7528;&#x6237;&#x5C06;&#x5176;&#x6DFB;&#x52A0;&#x5230; Vuex store&#xFF0C;&#x53EF;&#x80FD;&#x9700;&#x8981;&#x8003;&#x8651;&#x6A21;&#x5757;&#x7684;&#x7A7A;&#x95F4;&#x540D;&#x79F0;&#x95EE;&#x9898;&#x3002;&#x5BF9;&#x4E8E;&#x8FD9;&#x79CD;&#x60C5;&#x51B5;&#xFF0C;&#x4F60;&#x53EF;&#x4EE5;&#x901A;&#x8FC7;&#x63D2;&#x4EF6;&#x7684;&#x53C2;&#x6570;&#x5BF9;&#x8C61;&#x6765;&#x5141;&#x8BB8;&#x7528;&#x6237;&#x6307;&#x5B9A;&#x7A7A;&#x95F4;&#x540D;&#x79F0;&#xFF1A;</p>
<pre class="language-"><code class="lang-js"><span class="token comment" spellcheck="true">// &#x901A;&#x8FC7;&#x63D2;&#x4EF6;&#x7684;&#x53C2;&#x6570;&#x5BF9;&#x8C61;&#x5F97;&#x5230;&#x7A7A;&#x95F4;&#x540D;&#x79F0;</span>
<span class="token comment" spellcheck="true">// &#x7136;&#x540E;&#x8FD4;&#x56DE; Vuex &#x63D2;&#x4EF6;&#x51FD;&#x6570;</span>
<span class="token keyword">export</span> <span class="token keyword">function</span> createPlugin <span class="token punctuation">(</span>options <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token punctuation">}</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
  <span class="token keyword">return</span> <span class="token keyword">function</span> <span class="token punctuation">(</span>store<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token comment" spellcheck="true">// &#x628A;&#x7A7A;&#x95F4;&#x540D;&#x5B57;&#x6DFB;&#x52A0;&#x5230;&#x63D2;&#x4EF6;&#x6A21;&#x5757;&#x7684;&#x7C7B;&#x578B;&#xFF08;type&#xFF09;&#x4E2D;&#x53BB;</span>
    <span class="token keyword">const</span> namespace <span class="token operator">=</span> options<span class="token punctuation">.</span>namespace <span class="token operator">||</span> <span class="token string">&apos;&apos;</span>
    store<span class="token punctuation">.</span><span class="token function">dispatch</span><span class="token punctuation">(</span>namespace <span class="token operator">+</span> <span class="token string">&apos;pluginAction&apos;</span><span class="token punctuation">)</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre>
<h3 id="&#x6A21;&#x5757;&#x52A8;&#x6001;&#x6CE8;&#x518C;">&#x6A21;&#x5757;&#x52A8;&#x6001;&#x6CE8;&#x518C;</h3>
<p>&#x5728; store &#x521B;&#x5EFA;<strong>&#x4E4B;&#x540E;</strong>&#xFF0C;&#x4F60;&#x53EF;&#x4EE5;&#x4F7F;&#x7528; <code>store.registerModule</code> &#x65B9;&#x6CD5;&#x6CE8;&#x518C;&#x6A21;&#x5757;&#xFF1A;</p>
<pre class="language-"><code class="lang-js"><span class="token comment" spellcheck="true">// &#x6CE8;&#x518C;&#x6A21;&#x5757; `myModule`</span>
store<span class="token punctuation">.</span><span class="token function">registerModule</span><span class="token punctuation">(</span><span class="token string">&apos;myModule&apos;</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>
  <span class="token comment" spellcheck="true">// ...</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>
<span class="token comment" spellcheck="true">// &#x6CE8;&#x518C;&#x5D4C;&#x5957;&#x6A21;&#x5757; `nested/myModule`</span>
store<span class="token punctuation">.</span><span class="token function">registerModule</span><span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token string">&apos;nested&apos;</span><span class="token punctuation">,</span> <span class="token string">&apos;myModule&apos;</span><span class="token punctuation">]</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>
  <span class="token comment" spellcheck="true">// ...</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>
</code></pre>
<p>&#x4E4B;&#x540E;&#x5C31;&#x53EF;&#x4EE5;&#x901A;&#x8FC7; <code>store.state.myModule</code> &#x548C; <code>store.state.nested.myModule</code> &#x8BBF;&#x95EE;&#x6A21;&#x5757;&#x7684;&#x72B6;&#x6001;&#x3002;</p>
<p>&#x6A21;&#x5757;&#x52A8;&#x6001;&#x6CE8;&#x518C;&#x529F;&#x80FD;&#x4F7F;&#x5F97;&#x5176;&#x4ED6; Vue &#x63D2;&#x4EF6;&#x53EF;&#x4EE5;&#x901A;&#x8FC7;&#x5728; store &#x4E2D;&#x9644;&#x52A0;&#x65B0;&#x6A21;&#x5757;&#x7684;&#x65B9;&#x5F0F;&#x6765;&#x4F7F;&#x7528; Vuex &#x7BA1;&#x7406;&#x72B6;&#x6001;&#x3002;&#x4F8B;&#x5982;&#xFF0C;<a href="https://github.com/vuejs/vuex-router-sync" target="_blank"><code>vuex-router-sync</code></a> &#x63D2;&#x4EF6;&#x5C31;&#x662F;&#x901A;&#x8FC7;&#x52A8;&#x6001;&#x6CE8;&#x518C;&#x6A21;&#x5757;&#x5C06; vue-router &#x548C; vuex &#x7ED3;&#x5408;&#x5728;&#x4E00;&#x8D77;&#xFF0C;&#x5B9E;&#x73B0;&#x5E94;&#x7528;&#x7684;&#x8DEF;&#x7531;&#x72B6;&#x6001;&#x7BA1;&#x7406;&#x3002;</p>
<p>&#x4F60;&#x4E5F;&#x53EF;&#x4EE5;&#x4F7F;&#x7528; <code>store.unregisterModule(moduleName)</code> &#x6765;&#x52A8;&#x6001;&#x5378;&#x8F7D;&#x6A21;&#x5757;&#x3002;&#x6CE8;&#x610F;&#xFF0C;&#x4F60;&#x4E0D;&#x80FD;&#x4F7F;&#x7528;&#x6B64;&#x65B9;&#x6CD5;&#x5378;&#x8F7D;&#x9759;&#x6001;&#x6A21;&#x5757;&#xFF08;&#x5373;&#x521B;&#x5EFA; store &#x65F6;&#x58F0;&#x660E;&#x7684;&#x6A21;&#x5757;&#xFF09;&#x3002;</p>
<p>&#x5728;&#x6CE8;&#x518C;&#x4E00;&#x4E2A;&#x65B0; module &#x65F6;&#xFF0C;&#x4F60;&#x5F88;&#x6709;&#x53EF;&#x80FD;&#x60F3;&#x4FDD;&#x7559;&#x8FC7;&#x53BB;&#x7684; state&#xFF0C;&#x4F8B;&#x5982;&#x4ECE;&#x4E00;&#x4E2A;&#x670D;&#x52A1;&#x7AEF;&#x6E32;&#x67D3;&#x7684;&#x5E94;&#x7528;&#x4FDD;&#x7559; state&#x3002;&#x4F60;&#x53EF;&#x4EE5;&#x901A;&#x8FC7; <code>preserveState</code> &#x9009;&#x9879;&#x5C06;&#x5176;&#x5F52;&#x6863;&#xFF1A;<code>store.registerModule(&apos;a&apos;, module, { preserveState: true })</code>&#x3002;</p>
<h3 id="&#x6A21;&#x5757;&#x91CD;&#x7528;">&#x6A21;&#x5757;&#x91CD;&#x7528;</h3>
<p>&#x6709;&#x65F6;&#x6211;&#x4EEC;&#x53EF;&#x80FD;&#x9700;&#x8981;&#x521B;&#x5EFA;&#x4E00;&#x4E2A;&#x6A21;&#x5757;&#x7684;&#x591A;&#x4E2A;&#x5B9E;&#x4F8B;&#xFF0C;&#x4F8B;&#x5982;&#xFF1A;</p>
<ul>
<li>&#x521B;&#x5EFA;&#x591A;&#x4E2A; store&#xFF0C;&#x4ED6;&#x4EEC;&#x516C;&#x7528;&#x540C;&#x4E00;&#x4E2A;&#x6A21;&#x5757; (&#x4F8B;&#x5982;&#x5F53; <code>runInNewContext</code> &#x9009;&#x9879;&#x662F; <code>false</code> &#x6216; <code>&apos;once&apos;</code> &#x65F6;&#xFF0C;&#x4E3A;&#x4E86;<a href="https://ssr.vuejs.org/en/structure.html#avoid-stateful-singletons" target="_blank">&#x5728;&#x670D;&#x52A1;&#x7AEF;&#x6E32;&#x67D3;&#x4E2D;&#x907F;&#x514D;&#x6709;&#x72B6;&#x6001;&#x7684;&#x5355;&#x4F8B;</a>)</li>
<li>&#x5728;&#x4E00;&#x4E2A; store &#x4E2D;&#x591A;&#x6B21;&#x6CE8;&#x518C;&#x540C;&#x4E00;&#x4E2A;&#x6A21;&#x5757;</li>
</ul>
<p>&#x5982;&#x679C;&#x6211;&#x4EEC;&#x4F7F;&#x7528;&#x4E00;&#x4E2A;&#x7EAF;&#x5BF9;&#x8C61;&#x6765;&#x58F0;&#x660E;&#x6A21;&#x5757;&#x7684;&#x72B6;&#x6001;&#xFF0C;&#x90A3;&#x4E48;&#x8FD9;&#x4E2A;&#x72B6;&#x6001;&#x5BF9;&#x8C61;&#x4F1A;&#x901A;&#x8FC7;&#x5F15;&#x7528;&#x88AB;&#x5171;&#x4EAB;&#xFF0C;&#x5BFC;&#x81F4;&#x72B6;&#x6001;&#x5BF9;&#x8C61;&#x88AB;&#x4FEE;&#x6539;&#x65F6; store &#x6216;&#x6A21;&#x5757;&#x95F4;&#x6570;&#x636E;&#x4E92;&#x76F8;&#x6C61;&#x67D3;&#x7684;&#x95EE;&#x9898;&#x3002;</p>
<p>&#x5B9E;&#x9645;&#x4E0A;&#x8FD9;&#x548C; Vue &#x7EC4;&#x4EF6;&#x5185;&#x7684; <code>data</code> &#x662F;&#x540C;&#x6837;&#x7684;&#x95EE;&#x9898;&#x3002;&#x56E0;&#x6B64;&#x89E3;&#x51B3;&#x529E;&#x6CD5;&#x4E5F;&#x662F;&#x76F8;&#x540C;&#x7684;&#x2014;&#x2014;&#x4F7F;&#x7528;&#x4E00;&#x4E2A;&#x51FD;&#x6570;&#x6765;&#x58F0;&#x660E;&#x6A21;&#x5757;&#x72B6;&#x6001;&#xFF08;&#x4EC5; 2.3.0+ &#x652F;&#x6301;&#xFF09;&#xFF1A;</p>
<pre class="language-"><code class="lang-js"><span class="token keyword">const</span> MyReusableModule <span class="token operator">=</span> <span class="token punctuation">{</span>
  state <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">return</span> <span class="token punctuation">{</span>
      foo<span class="token punctuation">:</span> <span class="token string">&apos;bar&apos;</span>
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
  <span class="token comment" spellcheck="true">// mutation, action &#x548C; getter &#x7B49;&#x7B49;...</span>
<span class="token punctuation">}</span>
</code></pre>

                                
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