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...When ES6 Arrow functions don't seem to work for assigning a function to an object with prototype.object. Consider the following examples: function Animal(name, type){ this.name = name; this.type = type; this.toString = () => `${this.na...This question already has answers here:...
I am using ReactJS with Babel and Webpack and using ES6 as well as the proposed class fields for arrow functions. I understand that arrow functions make things more efficient by not recreating the functions each render similar to how binding in the...
I know that 'this' in JavaScript has a different meaning than in in TypeScript, as per this article 'this' in TypeScript. I have the following code in JavaScript used to create a thicker stroke on the selected node, and give all oth...
I'm using arrow functions and I'm debugging with Chrome and Firefox Dev Tool. I am getting, this as undefined, even though the code still works. My assumption is, that it has something to do with source-maps. Here are the tools I use in...
I started to use ES6 fat arrow function notation and I really like it. But I am a little bit confused about it context. As far as I know, keyword this inside fat arrow function refers to context where the function is currently running. I wanted to do...
I'm just looking for a reason as to why this is invalid: () => throw 42; I know I can get around it via: () => {throw 42};...©2020 All rights reserved.