JS String startsWith, endsWith methods

stringUtil.js

var stringUtil = (function(global)) {

	// prototype modifiers 
	if (typeof String.prototype.startsWith !== 'function') {
		String.prototype.startsWith = function(str) {
		return this.slice(0, str.length) === str;
		};
	}
	 
	if (typeof String.prototype.endsWith !== 'function') {
		String.prototype.endsWith = function(str) {
			return this.slice(-str.length) === str;
		};
	}
	 
	if (typeof String.prototype.stripTags !== 'function') {
		String.prototype.stripTags = function() {
			return this.replace(/(<([^>]+)>)/ig,"");
		}
	}


	/*
		add new functions here
		ex:
			var example = function(str) {
				// do something to str....
				return str;
			};
	*/






	/*
		expose new functions: key value pairing
								key => name used to call function in stringUtil
								value => private function declared inside stringUtil
		ex:
			return {
				ex: example
			};

	*/

	return {
		
	};


})(this);