performWhen

performWhen.js

define([], function () {
    return function (task_closure, condition_closure, timeout_function) {
        var itself = function () {
            timeout_function(function () {
                if (condition_closure()) {
                    task_closure();
                } else {
                    itself();
                }
            }, 100);
        };
        itself();
    };
});

/*
Usage example:
    performWhen(
        function () {
            console.log('execute some code here'); // this block code will be executed when the condition function is satisfied
        },
        function () {
            return $('#some_element').is(":visible") == false; // this is the condition function
        },
        $timeout  // the angular $timeout, or setTimeout, etc
    );
*/

if you want to use it without requirejs, just remove the define([], function () {, and store the function where you want