JQuery1.8 判断元素是否绑定事件的方法
内容摘要
On previous versions, you could call it like for other data :
obj.data('events');
In jQuery 1.8, this direct access was removed, so in recent versions you must
obj.data('events');
In jQuery 1.8, this direct access was removed, so in recent versions you must
文章正文
On previous versions, you could call it like for other data :
obj.data('events');
In jQuery 1.8, this direct access was removed, so in recent versions you must call it like this :
$._data(obj[0],"events")
大概的意思是版本可以使用obj.data('event'); JQuery1.8版本取消了obj.data方法，改为$._data方法
注意:$._data(obj[0],"event") 中的obj[0],一定要加上数组[0]下标，否则会取不到数据
-------以下为举例
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script src="/jquery-easyui-1.3.2/jquery-1.8.0.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(function () {
$("#btnTest").click(function () { alert('aa'); });
$("#btn").click(function () {
//判断是否绑定了click事件
var objEvt = $._data($("#btnTest")[0], "events");
if (objEvt && objEvt["click"]) {
//console.info(objEvt["click"]);
alert("bind click");
}
else {
alert("Not bind click");
}
});
});
</script>
</head>
<body>
<input type="button" id="btn" value="测试是否绑定事件" />
<input type="button" id="btnTest" value="被测试按钮" />
</body>
</html>
代码注释
作者：喵哥笔记
