Mastering JavaScript Promises

View revisited

The view() method helps in mirroring all the values into Q-based promises without any distinction, either it comes from a value or any other function. There are two methods that can make this possible:

• promise.post(name)
• promise.send(name)

This converts a method of the promise value to a promise of the method result.

A result of view() has methods for all methods of the promise value. You can use view in the then callback of view(), for example:

// object-view.js
Q.resolve(new Date()).view().then(function (dateView) {
    return dateView.toTimeString().then(function (str) {
        return /\((.*)\)/.exec(str)[0]
    });
}).then(console.log);