How one can write a function, which takes only few attributes in most-compact way in ES6?  I've came up with solution using destructuring + simplified object literal, but I don't like that list of fields is repeated in the code.  Is there a...
The question is directed at people who have thought about code style in the context of the upcoming ECMAScript 6 (Harmony) and who have already worked with the language.  With () => {} and function () {} we are getting two very similar ways to w...
I would like to ask why my state is not changing when I do an onclick event. I've search a while ago that I need to bind the onclick function in constructor but still the state is not updating. Here's my code:  import React from 'react&...
I haven't seen this syntax before and am wondering what it's all about.   var { Navigation } = require('react-router');   The brackets on the left are throwing a syntax error:     unexpected token {   I'm not sure what part of t...
I've heard that accessing let and const values before they are initialized can cause a ReferenceError because of something called the temporal dead zone.  What is the temporal dead zone, how does it relate to scope and hoisting, and in what sit...
I have been reading a bunch of react code and I see stuff like this that I don't understand:  handleChange = field => e => {   e.preventDefault();   /// Do something here }...
Using ES6 arrow functions with lexical this binding is great.  However, I ran into an issue a moment ago using it with a typical jQuery click binding:  class Game {   foo() {     self = this;     this._pads.on('click', function() {       if...
This question already has answers here:...
I understand that let prevents duplicate declarations which is nice.  let x; let x; // error!   Variables declared with let can also be used in closures which can be expected  let i = 100; setTimeout(function () { console.log(i) }, i); // '100&...
Currently in ES5 many of us are using the following pattern in frameworks to create classes and class variables, which is comfy:    // ES 5 FrameWork.Class({      variable: 'string',     variable2: true,      init: function(){      },...

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