JavaScript or jQuery string ends with utility function

Question

what is the easiest way to figure out if a string ends with a certain value?

Answer 1

Stolen from prototypejs:

String.prototype.endsWith = function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
};

'slaughter'.endsWith('laughter');
// -> true

Answer 2

You can do 'hello world'.slice(-5)==='world'. Works in all browsers. Much faster than regex.