Javascript String Utilities

TSStringUtils.js

String.prototype.getFileExtension = function()
	{
	var ret = (/[.]/.exec(this)) ? /[^.]+$/.exec(this) : undefined;
	if (ret && ret.length) ret = ret[0];
	return ret;
	}


if (typeof String.prototype.startsWith != 'function')
	{
	String.prototype.startsWith = function (str)
		{
		return this.indexOf(str) === 0;
		};
	}