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diff --git a/files/zh-cn/web/api/element/blur_event/index.html b/files/zh-cn/web/api/element/blur_event/index.html new file mode 100644 index 0000000000..a57cc5b995 --- /dev/null +++ b/files/zh-cn/web/api/element/blur_event/index.html @@ -0,0 +1,150 @@ +--- +title: blur (event) +slug: Web/Events/blur +translation_of: Web/API/Element/blur_event +--- +<p>当一个元素失去焦点的时候 blur 事件被触发。它和 <a href="/en-US/docs/Mozilla_event_reference/focusout"><code>focusout</code></a> 事件的主要区别是 focusout 支持冒泡。</p> + +<h2 id="常规信息">常规信息</h2> + +<dl> + <dt style="float: left; text-align: right; width: 120px;">规范</dt> + <dd style="margin: 0 0 0 120px;"><a class="external" href="http://www.w3.org/TR/DOM-Level-3-Events/#event-type-blur">DOM L3</a></dd> + <dt style="float: left; text-align: right; width: 120px;">接口</dt> + <dd style="margin: 0 0 0 120px;">{{domxref("FocusEvent")}}</dd> + <dt style="float: left; text-align: right; width: 120px;">是否冒泡</dt> + <dd style="margin: 0 0 0 120px;">否</dd> + <dt style="float: left; text-align: right; width: 120px;">可取消默认行为</dt> + <dd style="margin: 0 0 0 120px;">否</dd> + <dt style="float: left; text-align: right; width: 120px;">目标对象</dt> + <dd style="margin: 0 0 0 120px;">元素(Element)</dd> + <dt style="float: left; text-align: right; width: 120px;">默认行为</dt> + <dd style="margin: 0 0 0 120px;">无</dd> +</dl> + +<p>{{NoteStart}}{{domxref("Document.activeElement")}} 的值随浏览器的不同而不同 ({{bug(452307)}}): IE10把值设为焦点将要移向的对象 , 而Firefox和Chrome 往往把值设为<code>body</code> .{{NoteEnd}}</p> + +<h2 id="属性">属性</h2> + +<table class="standard-table"> + <thead> + <tr> + <th scope="col">属性</th> + <th scope="col">类型</th> + <th scope="col">描述</th> + </tr> + </thead> + <tbody> + <tr> + <td><code>target</code> {{readonlyInline}}</td> + <td>{{domxref("EventTarget")}}</td> + <td>产生该事件的对象(DOM树中最顶级的那个对象).</td> + </tr> + <tr> + <td><code>type</code> {{readonlyInline}}</td> + <td>{{domxref("DOMString")}}</td> + <td>事件类型.</td> + </tr> + <tr> + <td><code>bubbles</code> {{readonlyInline}}</td> + <td>{{jsxref("Boolean")}}</td> + <td>该事件是否冒泡.</td> + </tr> + <tr> + <td><code>cancelable</code> {{readonlyInline}}</td> + <td>{{jsxref("Boolean")}}</td> + <td>该事件是否可取消默认行为.</td> + </tr> + <tr> + <td><code>relatedTarget</code> {{readonlyInline}}</td> + <td>{{domxref("EventTarget")}} (DOM 元素)</td> + <td>无</td> + </tr> + </tbody> +</table> + +<h2 id="事件代理">事件代理</h2> + +<p>有两种方法来为这个事件实现事件代理:在支持 <code>focusout</code> 事件的浏览器中使用 focusout 事件(除了 FireFox 以外的浏览器都支持 focusout)或者通过设置 <a href="/en-US/docs/DOM/element.addEventListener"><code>addEventListener</code></a> 方法的第三个参数 "useCapture" 为 <code>true:</code></p> + +<h3 id="HTML_Content">HTML Content</h3> + +<pre class="brush:html;"><form id="form"> + <input type="text" placeholder="text input"> + <input type="password" placeholder="password"> +</form></pre> + +<h3 id="JavaScript_Content">JavaScript Content</h3> + +<pre class="brush: js">var form = document.getElementById("form"); +form.addEventListener("focus", function( event ) { + event.target.style.background = "pink"; +}, true); +form.addEventListener("blur", function( event ) { + event.target.style.background = ""; +}, true);</pre> + +<p>{{EmbedLiveSample('Event_delegation')}}</p> + +<h2 id="浏览器兼容性">浏览器兼容性</h2> + +<div>{{CompatibilityTable}}</div> + +<div id="compat-desktop"> +<table class="compat-table"> + <tbody> + <tr> + <th>Feature</th> + <th>Chrome</th> + <th>Firefox (Gecko)</th> + <th>Internet Explorer</th> + <th>Opera</th> + <th>Safari</th> + </tr> + <tr> + <td>Basic support</td> + <td>5</td> + <td>{{CompatVersionUnknown}}<sup>[1]</sup></td> + <td>6</td> + <td>12.1</td> + <td>5.1</td> + </tr> + </tbody> +</table> +</div> + +<div id="compat-mobile"> +<table class="compat-table"> + <tbody> + <tr> + <th>Feature</th> + <th>Android</th> + <th>Chrome for Android</th> + <th>Firefox Mobile (Gecko)</th> + <th>IE Mobile</th> + <th>Opera Mobile</th> + <th>Safari Mobile</th> + </tr> + <tr> + <td>Basic support</td> + <td>4.0</td> + <td>53</td> + <td>{{CompatUnknown}}</td> + <td>10.0</td> + <td>12.1</td> + <td>5.1</td> + </tr> + </tbody> +</table> +</div> + +<p>[1] 在 Gecko 24 {{geckoRelease(24)}} 之前,事件的接口为 {{domxref("Event")}},而不是 {{domxref("FocusEvent")}}。参考 ({{bug(855741)}}).</p> + +<h2 id="相关的事件">相关的事件</h2> + +<ul> + <li>{{event("focus")}}</li> + <li>{{event("blur")}}</li> + <li>{{event("focusin")}}</li> + <li>{{event("focusout")}}</li> +</ul> |