时间：2021-07-01 10:21:17 帮助过：4人阅读
<!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="Content-Type" content="text/html; charset=utf-8" />
<title>利用jQuery的$.event.fix函数统一浏览器event处理</title>
<script type="text/javascript" src="http://img.jb51.net/jslib/jquery/jquery.js"></script>
</head>
<body>
<input type="button" value="http://wwww.gxlcms.com" onclick="eventHandler(event)" />
<script type="text/javascript">
//请使用不同浏览器测试本页，你将看到一样的结果
function eventHandler(e)
{
var event = $.event.fix(e);
var elem = event.target;
alert('当前点击对象的标签名是:' + elem.tagName);
alert('当前点击按钮文本是:' + elem.value);
alert('pageX:' + event.pageX + ',pageY:' + event.pageY);
//得到按键码
event.keyCode
//取消浏览器默认行为
event.preventDefault();
//取消事件冒泡
event.stopPropagation();
//...还有好些不是很常用属性，这里不一一列举
}
</script>
</body>
</html>
三、jQuery $.event.fix方法定义原代码参考
代码如下:
fix: function(event)
{
if (event[expando] == true)
return event;
// store a copy of the original event object
// and "clone" to set read-only properties
var originalEvent = event;
event =
{
originalEvent: originalEvent
};
var props = "altKey attrChange attrName bubbles button cancelable charCode clientX clientY ctrlKey currentTarget data detail eventPhase fromElement handler keyCode metaKey newValue originalTarget pageX pageY prevValue relatedNode relatedTarget screenX screenY shiftKey srcElement target timeStamp toElement type view wheelDelta which".split(" ");
for (var i = props.length; i; i--)
event[props[i]] = originalEvent[props[i]];
// Mark it as fixed
event[expando] = true;
// add preventDefault and stopPropagation since
// they will not work on the clone
event.preventDefault = function()
{
// if preventDefault exists run it on the original event
if (originalEvent.preventDefault)
originalEvent.preventDefault();
// otherwise set the returnValue property of the original event to false (IE)
originalEvent.returnValue = false;
};
event.stopPropagation = function()
{
// if stopPropagation exists run it on the original event
if (originalEvent.stopPropagation)
originalEvent.stopPropagation();
// otherwise set the cancelBubble property of the original event to true (IE)
originalEvent.cancelBubble = true;
};
// Fix timeStamp
event.timeStamp = event.timeStamp || now();
// Fix target property, if necessary
if (!event.target)
event.target = event.srcElement || document; // Fixes #1925 where srcElement might not be defined either
// check if target is a textnode (safari)
if (event.target.nodeType == 3)
event.target = event.target.parentNode;
// Add relatedTarget, if necessary
if (!event.relatedTarget && event.fromElement)
event.relatedTarget = event.fromElement == event.target ? event.toElement : event.fromElement;
// Calculate pageX/Y if missing and clientX/Y available
if (event.pageX == null && event.clientX != null)
{
var doc = document.documentElement, body = document.body;
event.pageX = event.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc.clientLeft || 0);
event.pageY = event.clientY + (doc && doc.scrollTop || body && body.scrollTop || 0) - (doc.clientTop || 0);
}
// Add which for key events
if (!event.which && ((event.charCode || event.charCode === 0) ? event.charCode : event.keyCode))
event.which = event.charCode || event.keyCode;
// Add metaKey to non-Mac browsers (use ctrl for PC's and Meta for Macs)
if (!event.metaKey && event.ctrlKey)
event.metaKey = event.ctrlKey;
// Add which for click: 1 == left; 2 == middle; 3 == right
// Note: button is not normalized, so don't use it
if (!event.which && event.button)
event.which = (event.button & 1 ? 1 : (event.button & 2 ? 3 : (event.button & 4 ? 2 : 0)));
return event;
}
作者：WebFlash
出处：http://webflash.cnblogs.com