prototype « loop « Javascript Data Type Q&A

1. Javascript: hiding prototype methods in for loop?    stackoverflow.com

So lets say I've added some prototype methods to the Array class:

Array.prototype.containsKey = function(obj) {
    for(var key in this)
        if (key ...

2. Javascript custom Array.prototype interfering with for-in loops    stackoverflow.com

I was attempting to extend Javascript's Object type with a function that retrieves all of the property names that are part of that object (basically what PHP's array_keys() function does to ...

3. How to exclude added to Array methods from processing in "for..in" loop? (javascript)    stackoverflow.com

I've added some useful helpers to Array (such as toSource() for Opera). And now for..in returns the functions with normal properties. I'm using for..in now, because the code is easier to read ...

4. Event.observe in a loop and variables    stackoverflow.com

To put things in context, I'm loading a list of items via Ajax, creating a div with main info for each one and want to display details on page when clicking ...

5. Added function to Array in JavaScript, how to keep function out of for...in?    stackoverflow.com

I extended Array to support indexOf in IE using this JavaScript function from Mozilla MDC. Unfortunately, when using for...in syntax to iterate over the Array, the loop stops on indexOf ...

6. Binding 'this' in the loop of an array    stackoverflow.com

I have a Javascript function with a namespace and I am using Prototype to execute a function. Example code:

GUI.Title = {
 initialise: function() {
  var elements = $$('a');

  this.show(); ...

7. Javascript array extension method gets iterated in for loop    stackoverflow.com

i have created a javascript extension for the array object as follows:

Array.prototype.where = function (lamda) {
var results = [];

for (var i in this) {
    if (lamda(this[i])) {
  ...

8. Iterate over String.prototype    stackoverflow.com

I am aware that the for in loop can help iterate through properties of objects, prototypes and collections. The fact is, I need to iterate over String.prototype, and though console.log(String.prototype) displays the ...