blocks|key|1183466|text|您仍然可以使用Vue+3做同样的事情，但是如果使用复合api，则有一些不同：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1183467|选项API+:|offset|length|style|BOLD|1183468|​|1183469|const+{
++createApp
}+=+Vue;
const+App+=+{

++data()+{
++++return+{

++++}
++},
++methods:+{
++++submitData()+{
++++++this.$refs.myinput.focus()
++++}
++},
++mounted()+{

++}
}
const+app+=+createApp(App)
app.mount('#app')|code-block|syntax|javascript|1183470|<script+src="https://unpkg.com/vue@3.0.0-rc.11/dist/vue.global.prod.js"></script>

<div+id="app">
++Vue+3+app
++<input+ref="myinput"+/>
++<button+@click="submitData">
++Submit
++</button>
</div>|1183471|1183472|组合API:|1183473|1183474|const+{
++createApp,
++ref,
++onMounted,

}+=+Vue;
const+App+=+{

++setup()+{
++++const+myinput+=+ref(null)

++++function+submitData()+{
++++++myinput.value.focus()
++++}

++++return+{
++++++myinput,
++++++submitData
++++}
++}
}
const+app+=+createApp(App)
app.mount('#app')|1183475|<script+src="https://unpkg.com/vue@3.0.0-rc.11/dist/vue.global.prod.js"></script>

<div+id="app">
++Vue+3+app
++<input+ref="myinput"+/>
++<button+@click="submitData">
++Submit
++</button>
</div>|1183476|1183477|entityMap^0|0|0|7|0|0|0|0|0|0|6|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|11|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|12|8|@$D|13|E|14|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|15|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|16|8|@]|9|@]|A|$M|N]]|$1|O|3|P|5|L|7|17|8|@]|9|@]|A|$M|N]]|$1|Q|3|I|5|6|7|18|8|@]|9|@]|A|$]]|$1|R|3|S|5|6|7|19|8|@$D|1A|E|1B|F|G]]|9|@]|A|$]]|$1|T|3|I|5|6|7|1C|8|@]|9|@]|A|$]]|$1|U|3|V|5|L|7|1D|8|@]|9|@]|A|$M|N]]|$1|W|3|X|5|L|7|1E|8|@]|9|@]|A|$M|N]]|$1|Y|3|I|5|6|7|1F|8|@]|9|@]|A|$]]|$1|Z|3|-4|5|6|7|1G|8|@]|9|@]|A|$]]]|10|$]]

<p>You are still able to do the same thing using Vue 3, but if you work with composition api there's some difference :</p>
<p><strong>Options API :</strong></p>
<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>const {
  createApp
} = Vue;
const App = {

  data() {
    return {

    }
  },
  methods: {
    submitData() {
      this.$refs.myinput.focus()
    }
  },
  mounted() {

  }
}
const app = createApp(App)
app.mount('#app')</code></pre>
<pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script src="https://unpkg.com/vue@3.0.0-rc.11/dist/vue.global.prod.js"&gt;&lt;/script&gt;

&lt;div id="app"&gt;
  Vue 3 app
  &lt;input ref="myinput" /&gt;
  &lt;button @click="submitData"&gt;
  Submit
  &lt;/button&gt;
&lt;/div&gt;</code></pre>
</div>
</div>
</p>
<p><strong>composition API:</strong></p>
<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>const {
  createApp,
  ref,
  onMounted,

} = Vue;
const App = {

  setup() {
    const myinput = ref(null)

    function submitData() {
      myinput.value.focus()
    }

    return {
      myinput,
      submitData
    }
  }
}
const app = createApp(App)
app.mount('#app')</code></pre>
<pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script src="https://unpkg.com/vue@3.0.0-rc.11/dist/vue.global.prod.js"&gt;&lt;/script&gt;

&lt;div id="app"&gt;
  Vue 3 app
  &lt;input ref="myinput" /&gt;
  &lt;button @click="submitData"&gt;
  Submit
  &lt;/button&gt;
&lt;/div&gt;</code></pre>
</div>
</div>
</p>


blocks|key|2569106|text|如果有人想要在Vue3中设置特定元素的自动对焦，您可以使用Vue自定义指令来实现。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2569107|​|2569108|const+{+createApp,+onMounted+}+=+Vue;

const+app+=+createApp({})

//+Register+a+global+custom+directive+called+`v-focus`
app.directive('focus',+{
++//+When+the+bound+element+is+mounted+into+the+DOM...
++mounted(el)+{
++++//+Focus+the+element
++++el.focus()
++}
})

app.mount('#app')|code-block|syntax|javascript|2569109|<script+src="https://unpkg.com/vue@next"></script>

<div+id="app">
++++<input+/>
++++<input+v-focus+/>
++++<input+/>
</div>|2569110|2569111|entityMap|0|LINK|mutability|MUTABLE|url|https://v3.vuejs.org/guide/custom-directive.html#intro^0|T|8|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@$A|W|B|X|1|Y]]|C|$]]|$1|D|3|E|5|6|7|Z|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|10|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|H|7|11|8|@]|9|@]|C|$I|J]]|$1|M|3|E|5|6|7|12|8|@]|9|@]|C|$]]|$1|N|3|-4|5|6|7|13|8|@]|9|@]|C|$]]]|O|$P|$5|Q|R|S|C|$T|U]]]]

<p>In case someone comes to this question looking for a way to set the autofocus of a specific element in Vue3, you can achieve it using a <a href="https://v3.vuejs.org/guide/custom-directive.html#intro" rel="noreferrer">Vue Custom Directive</a></p>
<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>const { createApp, onMounted } = Vue;

const app = createApp({})

// Register a global custom directive called `v-focus`
app.directive('focus', {
  // When the bound element is mounted into the DOM...
  mounted(el) {
    // Focus the element
    el.focus()
  }
})

app.mount('#app')</code></pre>
<pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script src="https://unpkg.com/vue@next"&gt;&lt;/script&gt;

&lt;div id="app"&gt;
    &lt;input /&gt;
    &lt;input v-focus /&gt;
    &lt;input /&gt;
&lt;/div&gt;</code></pre>
</div>
</div>
</p>


blocks|key|2569131|text|在加载表单组件时，我试图选择一个特定的输入。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2569132|上面的例子没有用，所以我自己想出来了。|2569133|这要简单得多，IMHO。在挂载钩子中添加1条参考标签和1行代码。|2569134|在你想要聚焦的项目上放置一个参考标签。我在这里把它命名为"formStart“，但你可以随意命名你的名字。|2569135|<form+@submit.prevent="createNewRoute">
++<label+for="code">Code</label>
++<input+v-model="code"+id="code"+type="text"+ref="formStart"+/>+
++<label+for="type">Type</label>
++<input+v-model="type"+id="type"+type="text"+/>
++/*+Other+inputs+hidden+for+simplicity+*/
++<button+type="submit">Add+Route</button>
</form>|code-block|syntax|javascript|2569136|引用mounted钩子中的ref标记并focus()它。|offset|length|style|CODE|2569137|<script>
export+default+{
++/*+Other+options+hidden+for+simplicity+*/
++mounted()+{
++++this.$refs.formStart.focus();+//+FOCUS+ELEMENT+HERE
++},
};
</script>|2569138|entityMap^0|0|0|0|0|0|2|7|J|7|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|Y|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|Z|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|10|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|11|8|@$O|12|P|13|Q|R]|$O|14|P|15|Q|R]]|9|@]|A|$]]|$1|S|3|T|5|J|7|16|8|@]|9|@]|A|$K|L]]|$1|U|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|V|$]]

<p>I was trying to select a specific input upon loading the form component.</p>
<p>The above examples were not useful, so I figured it out myself.</p>
<p>This is far simpler, IMHO. Add 1 ref tag and 1 line of code in the mounted hook.</p>
<p>Place a ref tag on the item you'd like to focus. Here I named it &quot;formStart&quot; but you can name yours whatever you like.</p>
<pre class="lang-html prettyprint-override"><code>&lt;form @submit.prevent=&quot;createNewRoute&quot;&gt;
  &lt;label for=&quot;code&quot;&gt;Code&lt;/label&gt;
  &lt;input v-model=&quot;code&quot; id=&quot;code&quot; type=&quot;text&quot; ref=&quot;formStart&quot; /&gt; &lt;!-- REF TAG HERE --&gt;
  &lt;label for=&quot;type&quot;&gt;Type&lt;/label&gt;
  &lt;input v-model=&quot;type&quot; id=&quot;type&quot; type=&quot;text&quot; /&gt;
  /* Other inputs hidden for simplicity */
  &lt;button type=&quot;submit&quot;&gt;Add Route&lt;/button&gt;
&lt;/form&gt;
</code></pre>
<p>Reference that ref tag in the <code>mounted</code> hook and <code>focus()</code> it.</p>
<pre class="lang-js prettyprint-override"><code>&lt;script&gt;
export default {
  /* Other options hidden for simplicity */
  mounted() {
    this.$refs.formStart.focus(); // FOCUS ELEMENT HERE
  },
};
&lt;/script&gt;
</code></pre>


blocks|key|356568|text|我找到的最简单的答案不见了|type|unstyled|depth|inlineStyleRanges|entityRanges|data|356569|<input+type="text"+autofocus+/>|code-block|syntax|javascript|356570|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>Easiest answer I found is missing here</p>
<pre><code>&lt;input type=&quot;text&quot; autofocus /&gt;
</code></pre>


blocks|key|356572|text|另一种香草溶液是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|356573|document.getElementById("code")?.focus()|offset|length|style|CODE|356574|在onMounted上被调用|356575|entityMap^0|0|0|14|0|1|9|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@$D|N|E|O|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@$D|Q|E|R|F|G]]|9|@]|A|$]]|$1|J|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|K|$]]

<p>Another vanilla solution is:</p>
<p><code>document.getElementById(&quot;code&quot;)?.focus()</code></p>
<p>to be called on <code>onMounted</code></p>


blocks|key|1183595|text|在某些情况下，当输入隐藏在v-show或v-下时，如果需要执行nextTick，则焦点才能工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1183596|<span
++++v-show="!editMode"
++++@click="handleEditionMode"
>
++++{{+content+}}
</span>
<input
++++v-show="editMode"
++++ref="input"
++++v-model="content"
++++aria-describedby="item-content"
++++name="content"
++++type="text"
++++tabindex="0"
++++@focusout="editMode+=+false"
++++@keydown.enter="editMode+=+false"
/>|code-block|syntax|javascript|1183597|const+input+=+ref(null),
++++editMode+=+ref(false);

const+handleEditionMode+=+()+=>+{
++++editMode.value+=+true;
++++nextTick(()+=>+{
++++++++input.value.focus();
++++});
};|1183598|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|D|7|M|8|@]|9|@]|A|$E|F]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

<p>In some cases when the input is hidden under a v-show or v-if it is necessary to do a nextTick for the focus to work.</p>
<pre class="lang-html prettyprint-override"><code>&lt;span
    v-show=&quot;!editMode&quot;
    @click=&quot;handleEditionMode&quot;
&gt;
    {{ content }}
&lt;/span&gt;
&lt;input
    v-show=&quot;editMode&quot;
    ref=&quot;input&quot;
    v-model=&quot;content&quot;
    aria-describedby=&quot;item-content&quot;
    name=&quot;content&quot;
    type=&quot;text&quot;
    tabindex=&quot;0&quot;
    @focusout=&quot;editMode = false&quot;
    @keydown.enter=&quot;editMode = false&quot;
/&gt;
</code></pre>
<pre class="lang-js prettyprint-override"><code>const input = ref(null),
    editMode = ref(false);

const handleEditionMode = () =&gt; {
    editMode.value = true;
    nextTick(() =&gt; {
        input.value.focus();
    });
};
</code></pre>


<p>I worked with Vue2, but I recently try Vue 3.</p>
<p>I have simple problem:</p>
<pre><code> &lt;input ref=&quot;myinput&quot; /&gt;
 &lt;button @click=&quot;submitData&quot; /&gt;
</code></pre>
<p>I want to set &quot;focus&quot; on &quot;myinput&quot;, inside function &quot;submitData&quot;.
In Vue 2 it is simple (this.$refs ...), but in Vue 3, they made it complicated.
I saw example with &quot;setup&quot;, but is no use for me + I think you can only access &quot;value&quot; from element.</p>
<p>Is there any way to execute &quot;focus&quot; on on element inside methods?</p>


Vue.js 3 use autofocus on input with ref inside a method

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我与Vue2合作过，但最近我尝试了Vue 3。我有一个简单的问题： <input ref="myinput" /> <button @click="submitData" />我想设置“焦点”在“我的输入”，内部函数"submitData“。在Vue 2中，它很简单(这个.$ref.)，但是在Vue 3中，它们使它变得...

问Vue.js 3在方法中使用自动聚焦于输入和参考
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问Vue.js 3在方法中使用自动聚焦于输入和参考EN