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authorPeter Bengtsson <mail@peterbe.com>2020-12-08 14:43:23 -0500
committerPeter Bengtsson <mail@peterbe.com>2020-12-08 14:43:23 -0500
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+---
+title: HTMLSelectElement.checkValidity()
+slug: Web/API/HTMLSelectElement/checkValidity
+translation_of: Web/API/HTMLSelectElement/checkValidity
+---
+<div>{{ APIRef("HTML DOM") }}</div>
+
+<p><code><strong>HTMLSelectElement.checkValidity()</strong></code> 方法會檢查元素是否有任何的檢核、驗證條件,並且檢查是否滿足這些條件。如果元素沒有通過這些檢核,瀏覽器會於該元素上觸發一個可取消的 {{event("invalid")}} 事件,並回傳 <code>false</code>。</p>
+
+<h2 id="語法">語法</h2>
+
+<pre class="eval language-html"><code class="language-html">var <em>result</em> = <em>selectElt</em>.checkValidity();</code></pre>
+
+<h2 id="規範">規範</h2>
+
+<table class="standard-table">
+ <tbody>
+ <tr>
+ <th scope="col">Specification</th>
+ <th scope="col">Status</th>
+ <th scope="col">Comment</th>
+ </tr>
+ <tr>
+ <td>{{SpecName('HTML WHATWG', '#dom-cva-checkvalidity', 'HTMLSelectElement.checkValidity()')}}</td>
+ <td>{{Spec2('HTML WHATWG')}}</td>
+ <td>No change since the latest snapshot, {{SpecName('HTML5 W3C')}}.</td>
+ </tr>
+ <tr>
+ <td>{{SpecName('HTML5 W3C', 'forms.html#dom-cva-checkvalidity', 'HTMLSelectElement.checkValidity()')}}</td>
+ <td>{{Spec2('HTML5 W3C')}}</td>
+ <td>Initial definition, snapshot of {{SpecName('HTML WHATWG')}}</td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="瀏覽器相容性">瀏覽器相容性</h2>
+
+<div>{{CompatibilityTable}}</div>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+ <tr>
+ <th>Feature</th>
+ <th>Chrome</th>
+ <th>Edge</th>
+ <th>Firefox (Gecko)</th>
+ <th>Internet Explorer</th>
+ <th>Opera</th>
+ <th>Safari (WebKit)</th>
+ </tr>
+ <tr>
+ <td>Basic support</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>{{CompatGeckoDesktop(2.0)}}</td>
+ <td>10</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>{{CompatVersionUnknown}}</td>
+ </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+ <tr>
+ <th>Feature</th>
+ <th>Android</th>
+ <th>Chrome</th>
+ <th>Edge</th>
+ <th>Firefox Mobile (Gecko)</th>
+ <th>Firefox OS</th>
+ <th>IE Phone</th>
+ <th>Opera Mobile</th>
+ <th>Safari Mobile</th>
+ </tr>
+ <tr>
+ <td>Basic support</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>{{CompatGeckoMobile(2.0)}}</td>
+ <td>1.0</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatUnknown}}</td>
+ <td>{{CompatVersionUnknown}}</td>
+ </tr>
+ </tbody>
+</table>
+</div>
+
+<h2 id="參見">參見</h2>
+
+<ul>
+ <li><a href="/en-US/docs/Web/Guide/HTML/HTML5/Constraint_validation">Form validation.</a></li>
+</ul>