1 files changed, 66 insertions, 0 deletions
diff --git a/js/lib/prototypes.js b/js/lib/prototypes.js
new file mode 100644
index 000000000..cb6184097
--- /dev/null
+++ b/js/lib/prototypes.js
@@ -0,0 +1,66 @@
+/**
+ * Interates through each element of an array and calls a callback function.
+ * The callback should accept the following arguments:
+ *	element - The current element
+ *	index	- The current index
+ *
+ * This is different to Array.forEach in that if the callback returns false, the loop returns
+ * immediately without processing the remaining elements.
+ *
+ *	@param {Function} callback
+ *	@return {Bool}
+ */
+if (!Array.prototype.every) {
+	Array.prototype.every = function(callback) {
+		var len = this.length, i;
+
+		for (i = 0; i < len; i++) {
+			if (i in this && !callback.call(null, this[i], i)) {
+				return false;
+			}
+		}
+
+		return true;
+	};
+}
+
+/**
+ * Interates through each element of an array and calls callback a function.
+ * The callback should accept the following arguments:
+ *	element - The current element
+ *	index	- The current index
+ *
+ * This is different to Array.every in that the callback's return value is ignored and every
+ * element of the array will be parsed.
+ *
+ *	@param {Function} callback
+ *	@return {Void}
+ */
+if (!Array.prototype.forEach) {
+	Array.prototype.forEach = function(callback) {
+		var len = this.length, i;
+
+		for (i = 0; i < len; i++) {
+			if (i in this) {
+				callback.call(null, this[i], i);
+			}
+		}
+	};
+}
+
+/**
+ * Left trim
+ *
+ * Removes a character from the left side of a string.
+ * @param {String} str The character to remove
+ * @return {String}
+ */
+if (!String.prototype.ltrim) {
+	String.prototype.ltrim = function(str) {
+		if (this.indexOf(str) === 0) {
+			return this.substring(str.length);
+		} else {
+			return this;
+		}
+	};
+}
+\ No newline at end of file