如何使用jquery / javascript搜索字符串并在页面加载时替换？

Question

I have a very annoying validation bug from a plugin that is embedding a video. I can't change the plugin and need to use it to show the video. Is there a way that I could use js to search for the & and replace it with &amp?

This is the string that it needs to be replaced in:

http://player.vimeo.com/video/72874423?title=0&byline=0&portrait=0;api=1

I tried this, but unfortunately it isn't working:

(function ($, document, undefined) {
$(document).ready(function(){

var str = $( "iframe" ).attr( "src" );
str = str.replace(/&/g,"&");
$( "iframe" ).attr( "src",str );

    });

})(jQuery, document);

That is the only iframe on the page.

Answer 1

var str = "http://player.vimeo.com/video/72874423?title=0&byline=0&portrait=0;api=1";
str = str.replace(/&/g,"&amp");
alert(str);