Many characters cannot be sent in a URL, but must be converted to their hex encoding. These functions are used to convert an entire URI (a superset of URL) to and from a format that can be sent via a URI.

<script type="text/javascript">

var uri = "http://www.google.com/search?q=Online Web Tutorials at GlobalGuideLine"

document.write("Original uri: "+uri);

document.write("<br />encoded: "+encodeURI(uri));

</script>