Can I Loop Through A Javascript Object In Reverse Order?
Answer : Javascript objects don't have a guaranteed inherent order, so there doesn't exist a "reverse" order. 4.3.3 Object An object is a member of the type Object. It is an unordered collection of properties each of which contains a primitive value, object, or function. A function stored in a property of an object is called a method. Browsers do seem to return the properties in the same order they were added to the object, but since this is not standard, you probably shouldn't rely on this behavior. A simple function that calls a function for each property in reverse order as that given by the browser's for..in, is this: // f is a function that has the obj as 'this' and the property name as first parameter function reverseForIn(obj, f) { var arr = []; for (var key in obj) { // add hasOwnPropertyCheck if needed arr.push(key); } for (var i=arr.length-1; i>=0; i--) { f.call(obj, arr[i]); } } //usage reverseFo...