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...
When returning an object from an arrow function, it seems that it is necessary to use an extra set of {} and a return keyword because of an ambiguity in the grammar.  That means I can’t write p => {foo: "bar"}, but have to write p =>...
The new es6 arrow functions say return is implicit under some circumstances:     The expression is also the implicit return value of that function.   In what cases do I need to use return with es6 arrow functions?...
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 have an arrow function that looks like this (simplified):  const f = arg => { arg.toUpperCase(); };   But when I call it, I get undefined:  console.log(f("testing")); // undefined   Why?  Example:    const f = arg => { arg.toUpperCa...
I'm running lint with my React app, and I receive this error:  error    JSX props should not use arrow functions        react/jsx-no-bind   And this is where I'm running the arrow function (inside onClick):  {this.state.photos.map(tile =>...
I have a function that I am trying to convert to the new arrow syntax in ES6.  It is a named function:  function sayHello(name) {     console.log(name + ' says hello'); }   Is there a way to give it a name without a var statement:  var sayH...
I've read in several places that the key difference is that "this is lexically bound in arrow functions." That's all well and good, but I don't actually know what that means.  I know it means it's unique within the confines...

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