encode URI component code example

Example 1: js escape url parameter

var myUrl = "http://www.image.com/?username=unknown&password=unknown";
var encodedURL= "http://www.foobar.com/foo?imageurl=" + encodeURIComponent(myUrl);

Example 2: encodeuricomponent

The encodeURIComponent() function encodes a URI by replacing each instance of certain characters by one, two, three, or four escape sequences representing the UTF-8 encoding of the character.
console.log(encodeURIComponent('?x=test'));
// expected output: "%3Fx%3Dtest"