Object.fromEntries

By  on  

The Object object has been buffed with useful methods over the past few years.  Object.keys, Object.values, Object.freeze, and Object.assign all address frequently desired functionality.  One of the new Object methods is fromEntries, which accepts a Map or map-like array nesting and converts it to a useful object literal!

Convert Map to Object

Converting a Map to a key:value object is simple with Object.fromEntries:

Object.fromEntries(new Map([["a", "b"], ["c", "d"]]));
// Object { a: "b", c: "d" }

Convert a Nested Array to Object

Since the simple nested array is much like a Map, you can also do the following:

Object.fromEntries([["a", "b"], ["c", "d"]]);
// Object { a: "b", c: "d" }

There are great uses for Maps but there's nothing as amazing as a simple key:value object to store and reference information!

Recent Features

  • By
    Vibration API

    Many of the new APIs provided to us by browser vendors are more targeted toward the mobile user than the desktop user.  One of those simple APIs the Vibration API.  The Vibration API allows developers to direct the device, using JavaScript, to vibrate in...

  • By
    Responsive Images: The Ultimate Guide

    Chances are that any Web designers using our Ghostlab browser testing app, which allows seamless testing across all devices simultaneously, will have worked with responsive design in some shape or form. And as today's websites and devices become ever more varied, a plethora of responsive images...

Incredible Demos

  • By
    MooTools CountDown Plugin

    There are numerous websites around the internet, RapidShare for example, that make you wait an allotted amount of time before presenting you with your reward. Using MooTools, I've created a CountDown plugin that allows you to easily implement a similar system. The MooTools JavaScript The CountDown class...

  • By
    Create Your Own Dijit CSS Theme with LESS CSS

    The Dojo Toolkit seems to just get better and better.  One of the new additions in Dojo 1.6 was the use of LESS CSS to create Dijit themes.  The move to using LESS is a brilliant one because it makes creating your own Dijit theme...

Discussion

    Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!