Test if localStorage has a member

Storage.prototype.hasItem.js

Storage.prototype.hasItem = function(itemName, rejectEmpty) {
	var setting = this.getItem(itemName);
	return ( (setting !== null) && (rejectEmpty ? setting.length > 0 : true) );
}
/*
testStorageHasItem = function() {
	window.localStorage.setItem('test.foo', 'foo');
	console.log(window.localStorage.hasItem('test.foo')); // true
	console.log(window.localStorage.hasItem('test.foo', false)); // true
	console.log(window.localStorage.hasItem('test.foo', true)); // true

	window.localStorage.setItem('test.empty','');
	console.log(window.localStorage.hasItem('test.empty')); // true
	console.log(window.localStorage.hasItem('test.empty', false)); // true
	console.log(window.localStorage.hasItem('test.empty', true)); // false

	window.localStorage.removeItem('test.bar');
	console.log(window.localStorage.hasItem('test.bar' )); // false
	console.log(window.localStorage.hasItem('test.bar', false)); // false
	console.log(window.localStorage.hasItem('test.bar', true)); // false
}();
*/