Polyfills

AMD: Polyfills.js

(function() {
	'use strict';
	define([], function() {
		return {
			consolelog: function() {
				var alertFallback = true;
				if (typeof console === "undefined" || typeof console.log === "undefined") {
					console = {};
					if (alertFallback) {
						console.log = function(msg) {
							alert(msg);
						};
					} else {
						console.log = function() {};
					}
				}
			},
			placeholder: function() {
				$(document).ready(function() {

					if (!("placeholder" in document.createElement("input"))) {
						$("input[placeholder], textarea[placeholder]").each(function() {
							var val = $(this).attr("placeholder");
							if (this.value === "") {
								this.value = val;
							}
							$(this).focus(function() {
								if (this.value == val) {
									this.value = "";
								}
							}).blur(function() {
								if ($.trim(this.value) === "") {
									this.value = val;
								}
							});
						});

						// Clear default placeholder values on form submit
						$('form').submit(function() {
							$(this).find("input[placeholder], textarea[placeholder]").each(function() {
								if (this.value == $(this).attr("placeholder")) {
									this.value = "";
								}
							});
						});
					}
				});
			},
			trim: function() {
				if (typeof String.prototype.trim !== 'function') {
					String.prototype.trim = function() {
						return this.replace(/^\s+|\s+$/g, '');
					};
				}
			},
			foreach: function() {
				if (!Array.prototype.forEach) {
					Array.prototype.forEach = function(fn, scope) {
						for (var i = 0, len = this.length; i < len; ++i) {
							fn.call(scope, this[i], i, this);
						}
					};
				}
			},
			localstorage: function() {
				if (typeof window.localStorage == 'undefined' || typeof window.sessionStorage == 'undefined')(function() {

					var Storage = function(type) {
						function createCookie(name, value, days) {
							var date, expires;

							if (days) {
								date = new Date();
								date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
								expires = "; expires=" + date.toGMTString();
							} else {
								expires = "";
							}
							document.cookie = name + "=" + value + expires + "; path=/";
						}

						function readCookie(name) {
							var nameEQ = name + "=",
								ca = document.cookie.split(';'),
								i, c;

							for (i = 0; i < ca.length; i++) {
								c = ca[i];
								while (c.charAt(0) == ' ') {
									c = c.substring(1, c.length);
								}

								if (c.indexOf(nameEQ) === 0) {
									return c.substring(nameEQ.length, c.length);
								}
							}
							return null;
						}

						function setData(data) {
							data = JSON.stringify(data);
							if (type == 'session') {
								window.name = data;
							} else {
								createCookie('localStorage', data, 365);
							}
						}

						function clearData() {
							if (type == 'session') {
								window.name = '';
							} else {
								createCookie('localStorage', '', 365);
							}
						}

						function getData() {
							var data = type == 'session' ? window.name : readCookie('localStorage');
							return data ? JSON.parse(data) : {};
						}


						// initialise if there's already data
						var data = getData();

						return {
							length: 0,
							clear: function() {
								data = {};
								this.length = 0;
								clearData();
							},
							getItem: function(key) {
								return data[key] === undefined ? null : data[key];
							},
							key: function(i) {
								// not perfect, but works
								var ctr = 0;
								for (var k in data) {
									if (ctr == i) return k;
									else ctr++;
								}
								return null;
							},
							removeItem: function(key) {
								delete data[key];
								this.length--;
								setData(data);
							},
							setItem: function(key, value) {
								data[key] = value + ''; // forces the value to a string
								this.length++;
								setData(data);
							}
						};
					};

					if (typeof window.localStorage == 'undefined') window.localStorage = new Storage('local');
					if (typeof window.sessionStorage == 'undefined') window.sessionStorage = new Storage('session');

				})();
			}
		}
	});
})();