delay a Promise and log the time it takes to fulfill (legacy way)

delayPromise,js

function delayPromise(delay, value) {
    console.time();
    // using built-in Promise constructor-function/class.
    return new Promise(function(resolve) {
       setTimeout(function() {
            console.timeEnd();
            resolve(value);
        }, delay);
    });
}

var promise = delayPromise()
promise.then(function(returnedValue) {
    console.log(returnedValue)
});