how to make jquery each a number .

Question

This is my code:

$.each(3, function(n) {
    alert(n);
});

I want to alert three times but it doesn't work. What can I do?

Answer 1

why don't you use normal javascript?

for(var i=0; i<3; i++) {
  alert(i);
}

Answer 2

You can't.
$.each can only iterate over arrays or objects.

You're looking for the for loop:

for(var n = 0; i < 3; i++) {
    alert(n);
}

Answer 3

each must operate on an object. Try to create an array of length 3, e.g.

$.each(new Array(3),
       function(n){alert(n);}
);

Of course, I don't see the reason to avoid normal Javascript.

for (var n = 0; n < 3; ++ n)
   alert(n);

Answer 4

Late answer, but another option would be to prototype the Number with a method that would call a callback that many times.

Number.prototype.loop = function(cb) {
    for (var i = 0; i < this; i++) {
        cb.call(this, i);
    }
    return this + 0;
};

Then call it like this:

(3).loop(function(i) {
    alert( i );
});

RightJS does something like this. (Others probably too.)