javascript 元素的事件列表
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List of an element's events
提问by errorhandler
Is there a way to find all of the events for a element in javascript? or a way to unbind all events from a element?
有没有办法在javascript中找到元素的所有事件？或者从一个元素中解除所有事件的绑定？
Thanks.
谢谢。
采纳答案by Dave
There is not way to do that directly using javascript.
没有办法直接使用 javascript 来做到这一点。
Jquery has a couple of functions to keep track of that data.
Jquery 有几个函数来跟踪这些数据。
One "pure" way to do that is to change the addEventListener/attachEvent function through prototyping (search about javascript prototype stuff, not the framework).
一种“纯粹”的方法是通过原型设计更改 addEventListener/attachEvent 函数（搜索 javascript 原型内容，而不是框架）。
Or if you have a custom function to hadle adding/removing events you can tune it.
或者，如果您有一个自定义函数来处理添加/删除事件，您可以对其进行调整。
Well, that's it.
嗯，就是这样。
回答by NinjaCross
Of course ! Take a look at this to bind/unbind events http://api.jquery.com/category/events/and use this jQuery code fragment to get all the events bound to an element in the form of a hashset of keypairs "eventname/function delegate"
当然 ！看看这个绑定/解除绑定事件 http://api.jquery.com/category/events/并使用这个 jQuery 代码片段以密钥对“eventname/”的哈希集形式获取绑定到元素的所有事件函数委托”
jQuery(elem).data('events');
回答by Gus
If you don't want ot use jQuery, a quick and dirty way (and there's bound to be a better one) would be to loop through the element's parameters and check for functions that begin with 'on' (onclick etc).
如果您不想使用 jQuery，一种快速而肮脏的方法（肯定会有更好的方法）是循环遍历元素的参数并检查以“on”（onclick 等）开头的函数。
var el = document.getElementById('elementid') ;
el.onclick = function(e) { console.log('Clicked!') ; } ; // Attached test event.
if(typeof(el)=='object') {
for(var i in el) {
if(i.substr(0,2) == 'on' && typeof(el[i])=='function') {
el[i] = function() {} ; // Unbind with null function.
}
}
}
