This code snippet adds the Array.indexOf() function, making it available to ALL Array objects in JavaScript. This function will return the array index of a given value, or -1 if the item cannot be found within the Array.
1 2 3 4 5 6 7 8 9 10 | if ((typeof Array.prototype.indexOf) == "undefined") { Array.prototype.indexOf = function(item, start) { for (var i = (start || 0); i < this.length; i++) { if (this[i] == item) { return i; } } return -1; } } |
