I tried to prototype a length() method to Object and broke jQuery – how?

Posted by Barney on Stack Overflow See other posts from Stack Overflow or by Barney
Published on 2010-04-14T15:00:26Z Indexed on 2010/04/14 15:03 UTC
Read the original article Hit count: 201

Filed under:

JavaScript

|

prototype

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object

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method

|

jQuery

I wrote the following:

Object.prototype.length = function(){
    var count = -1;
    for(var i in this) count++;
    return count;
}

It works. But when I execute my page, even without using this function, Firebug tells me that jQuery's .appendTo() is no longer a function. Why would this be?

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