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返回值:jQuerytriggerHandler(type, [data])

概述

這個(gè)特別的方法將會(huì)觸發(fā)指定的事件類型上所有綁定的處理函數(shù)。但不會(huì)執(zhí)行瀏覽器默認(rèn)動(dòng)作,也不會(huì)產(chǎn)生事件冒泡。

這個(gè)方法的行為表現(xiàn)與trigger類似,但有以下三個(gè)主要區(qū)別:

* 第一,他不會(huì)觸發(fā)瀏覽器默認(rèn)事件。

* 第二,只觸發(fā)jQuery對(duì)象集合中第一個(gè)元素的事件處理函數(shù)。

* 第三,這個(gè)方法的返回的是事件處理函數(shù)的返回值,而不是據(jù)有可鏈性的jQuery對(duì)象。此外,如果最開始的jQuery對(duì)象集合為空,則這個(gè)方法返回 undefined 。

參數(shù)

type,[data]String,ArrayV1.2

type:要觸發(fā)的事件類型

data:傳遞給事件處理函數(shù)的附加參數(shù)

示例

描述:

如果你對(duì)一個(gè)focus事件執(zhí)行了 .triggerHandler() ,瀏覽器默認(rèn)動(dòng)作將不會(huì)被觸發(fā),只會(huì)觸發(fā)你綁定的動(dòng)作。

HTML 代碼:
<button id="old">.trigger("focus")</button>
<button id="new">.triggerHandler("focus")</button><br/><br/>
<input type="text" value="To Be Focused"/>
jQuery 代碼:
$("#old").click(function(){
  $("input").trigger("focus");
});
$("#new").click(function(){
  $("input").triggerHandler("focus");
});
$("input").focus(function(){
  $("<span>Focused!</span>").appendTo("body").fadeOut(1000);
});
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