Remove whitespace and line breaks between HTML elements using jQuery

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I tried the technique that user76888 laid out and it worked nicely. I packaged it into a jQuery plugin for convenience, and thought the community might enjoy it, so here:

jQuery.fn.cleanWhitespace = function() {
    this.contents().filter(
        function() { return (this.nodeType == 3 && !/\S/.test(this.nodeValue)); })
        .remove();
    return this;
}

To use this, just include it in a script tag, then select a tag to clean with jQuery and call the function like so:

$('#widget').cleanWhitespace();

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