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javascript當中事件派發(dispatchEvent)的用法

javascript當中事件派發(dispatchEvent)的用法

12.事件派發(dispatchEvent)

馬克-to-win:下例仔細剖析了dispatchEvent。

例 12.1(DispatchEventFireIEFF.html)



<HTML>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
</HEAD>
<BODY>
<select οnchange="alert('select onchange event');" id="select1">
<option>1</option>
<option>2</option>
</select>
<INPUT TYPE="button" value="按這" οnclick="clickButton()">
<script type="text/javascript">
function clickButton() {undefined
alert("click button");
var t = document.getElementById('select1')
if (document.all) {undefined
t.fireEvent("onchange");
alert("ie");
}
else {undefined
var evt = document.createEvent('HTMLEvents');
evt.initEvent('change', true, true);
t.dispatchEvent(evt);
}
}
</script>
按button也會發出option的select事件
</BODY>
</HTML>
更多內容請見原文,文章轉載自:

https://blog.csdn.net/qq_43650923/article/details/102985114