如何将自己的方法添加到HTMLElement对象? [英] How to add my own methods to HTMLElement object?
问题描述
例如对于 this.parentNode
我想写 this.p
或代替
document.getElementById('someid')
只需写 document.g('someid')
。当然这只是一个简单的例子,我只是想知道这样做的正确方法。
For example for this.parentNode
I would like to just write this.p
or instead of
document.getElementById('someid')
just write document.g('someid')
. Of course that are simple examples, I just want to know what is the correct way to do it.
(我知道我可以使用jQuery或Prototype,但我会想知道它是如何在JS中完成的那样)
(I know I can use jQuery or Prototype, but I'd like to learn how it is really done in JS)
推荐答案
虽然你可以原型<许多浏览器中的code> HTMLElement - Internet Explorer(6,7,8) NOT 其中之一。 AFAIK,IE9支持这一点(虽然我还没有测试过)。
Although you can prototype on the HTMLElement
in many browsers - Internet Explorer (6,7,8) is NOT one of them. AFAIK, IE9 does support this (though I haven't tested it).
对于处理它的浏览器,你可以这样做:
For browsers that do handle it, you can do:
HTMLElement.prototype.doHello = function(thing){
alert('Hello World from ' + thing);
};
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