endsWith in JavaScript

Question

How can I check if a string ends with a particular character in JavaScript?

Example: I have a string

var str = \"mystring#\";

I wa

Answer 1

This is the implementation of endsWith:

String.prototype.endsWith = function (str) {
  return (this.length >= str.length) && (this.substr(this.length - str.length) === str);
}