JavaScript – encodeURIComponent() Function

Definition and Usage
The encodeURIComponent() function encodes a URI component.
This function encodes special characters. In addition, it encodes the following characters: , / ? : @ & = + $ #
Tip: Use the decodeURIComponent() function to decode an encoded URI component.
Syntax

encodeURIComponent(uri)

Parameter	Description
uri	Required. The URI to be encoded

Browser Support
The encodeURIComponent() function is supported in all major browsers.
Example  Encode an URI:

<script type=”text/javascript”>  var uri=”http://gorav.com/my test.asp?name=ståle&car=saab”; document.write(encodeURIComponent(uri)); </script>

The output of the code above will be:
http%3A%2F%2Fgorav.com%2Fmy%20test.asp%3Fname%3Dst%C3%A5le%26car%3Dsaab