Question

In jQuery, is is possible to check if var x = [] changes, and then add the contents of the array to a textbox.

So if x contains ["1","2","3"]. My textbox textbox1 value will be "1","2","3"

Answer 1

You could do something like this to avoid using a watcher:

var Data = (function () {
    var _x = [],
        $textbox = $("#myTextbox");
    return {
        getX: function () {
            return x;
        },
        setX: function (x) {
            _x = x;
            // Setting 'x' triggers an update
            $textbox.val(x.join(","));
        }
    }
}();

And then set the value of x using Data.setX(x) and get it using Data.getX().