用addEventHandler添加闭包函数，怎样移除？解决方案
日期：2014-05-16 浏览次数：20499 次
用addEventHandler添加闭包函数，怎样移除？
用addEventHandler添加了二个闭包处理函数后，怎么样才能移除呢？
------解决方案--------------------
重定义覆盖click
或者将fn1 fn2赋值
- HTML code
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="X-UA-Compatible" content="IE=7" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>欢迎使用</title>
<script type="text/javascript" language="javascript">
function addEventHandler(Target, sEventType, fnHandler)
{
if (Target.addEventListener)
{
Target.addEventListener(sEventType, fnHandler, false);
}
else
if (Target.attachEvent)
{
Target.attachEvent("on" + sEventType, fnHandler);
}
else
{
Target["on" + sEventType] = fnHandler;
}
}
function removeEventHandler(Target, sEventType, fnHandler)
{
if (Target.removeEventListener)
{
Target.removeEventListener(sEventType, fnHandler, false);
}
else
if (Target.detachEvent)
{
Target.detachEvent("on" + sEventType, fnHandler);
}
else
{
Target["on" + sEventType] = null;
}
}
function Fun(i)
{
alert(i);
}
function Test()
{
var obj = document.getElementById("btnplay");
addEventHandler(obj, "click", function() { Fun(1); });
addEventHandler(obj, "click", function() { Fun(2); });
}
</script>
</head>
<body>
<div id="btnplay" title="test" style="width:40px; height:30px; background:red;" onclick="Fun(3)"></div>
<input type="button" value="Test" onclick="Test()" />
</body>
</html>
用addEventHandler添加了二个闭包处理函数后，怎么样才能移除呢？
------解决方案--------------------
重定义覆盖click
或者将fn1 fn2赋值
- HTML code
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="X-UA-Compatible" content="IE=7" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>欢迎使用</title>
<script type="text/javascript" language="javascript">
function addEventHandler(Target, sEventType, fnHandler)
{
if (Target.addEventListener)
{
Target.addEventListener(sEventType, fnHandler, false);
}
else
if (Target.attachEvent)
{
Target.attachEvent("on" + sEventType, fnHandler);
}
else
{
Target["on" + sEventType] = fnHandler;
}
}
function removeEventHandler(Target, sEventType, fnHandler)
{
if (Target.removeEventListener)
{
Target.removeEventListener(sEventType, fnHandler, false);
}
else
if (Target.detachEvent)
{
Target.detachEvent("on" + sEventType, fnHandler);
}
else
{
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