How do I add a specified delay to the resolution of a promise

Question

I\'d like to define a function that takes a promise, and returns an identical promise, except that the returned promises resolves an arbitrary timeout; my code looks something l

Answer 1

I hope you find the implementation of delay in Q insightful. https://github.com/kriskowal/q/blob/master/q.js#L1629-L1637

Q.delay = function (object, timeout) {
    if (timeout === void 0) {
        timeout = object;
        object = void 0;
    }
    return Q(object).delay(timeout);
};

Promise.prototype.delay = function (timeout) {
    return this.then(function (value) {
        var deferred = defer();
        setTimeout(function () {
            deferred.resolve(value);
        }, timeout);
        return deferred.promise;
    });
};