How do I encode a URL in JavaScript?

I want to implement a polyvore share button into a shopping cart. Some variable values are not being passed when the script executes (description and price) and I was told that URL encoding could be a solution. Can anyone share any leads on how to apply it in JavaScript alone to my snippet? Thanks in advance.

<a href="http://www.polyvore.com/cgi/add?title=%%GLOBAL_ProductName%%&url=http://lilaboutique.co.uk/products/%%GLOBAL_ProductName%%&imgurl=%%GLOBAL_ThumbImageURL%%&desc=%%GLOBAL开发者_JAVA技巧_ProductDesc%%&price=%%GLOBAL_ProductPrice%%">
<img src="http://cdn.polyvore.com/rsrc/img/favicon.png"></a> 

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You can use encodeURIComponent to encode the specific querystring values.

var url = "http://www.polyvore.com/cgi/add?title=" 
          + encodeURIComponent('%%GLOBAL_ProductName%%') 
          + "&url=" + encodeURIComponent("http://lilaboutique.co.uk/products/" 
              + encodeURIComponent('%%GLOBAL_ProductName%%') 
              + "&imgurl=" + encodeURIComponent('%%GLOBAL_ThumbImageURL%%') 
              + "&desc=" + encodeURIComponent('%%GLOBAL_ProductDesc%%') 
              + "&price=" + encodeURIComponent('%%GLOBAL_ProductPrice%%'));

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i use this library they have a lot of good things including the urlencode

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See escape() and unescape().

To remove "%", you can do this:

"http://www.polyvore.com/cgi/add?title=%%GLOBAL_ProductName%%&url".replace(/%/g, "")