whenConditionIsMet.js

function whenConditionIsMet(condition, callback, interval, timeout) {
    if (typeof interval !== "number") {
        interval = 150;
    }
    var runInt = setInterval(function() {
        try {
            if (condition() === true) {
                callback();
                clearInterval(runInt);
            }
        } catch(e) {
            
        }
    }, interval);
    
    if (typeof timeout === "number") {
        setTimeout(function() {
            clearInterval(runInt)
        }, timeout);
    }
}