Where can I find a List class for javascript with add() remove() and contains()?

Question

Where can I find a List class for javascript with add(obj) remove(obj) and contains(obj)?

Answer 1

you can already use push instead of add and pop instead of remove.

How do I check if an array includes an object in JavaScript? contains an answer for how to do contains.

Answer 2

You could write some simple array extensions:

Array.prototype.add = function (obj) {
    if (this && this.length)
       this.push(obj);
};

[1, 2, 3].add(4);

... etc

Answer 3

Those aren't hard features to implement. I would simply create my own custom type that inherited from Array and added the two additional methods you'd like (since you can already use push to add items).

Answer 4

You can just use the native javascript's arrays

var arr = [];
arr.push(5); // add(obj)
arr.indexOf(5); // returns the index in the array or -1 if not found -> contains(obj)

For removing, you can use arr.pop() to remove last element or arr.shift() to remove the first element.

More on javascript's arrays - http://www.hunlock.com/blogs/Mastering_Javascript_Arrays