OK. We have three times the Function.prototype.bind function here, whose (simplified) code function bind(context) { var fn = this; return function() { return fn.apply(context, arguments); } } I will abbreviate in a more functional style with lots of partial application: bindfn(context) -> fncontext. So what does it do? You have got bind.call(bind, bind) or bindbind(bind). … Read more
There are no (significant) differences. Well, okay, that’s a little premature. There are three tiny differences unique to arrow functions. Arrow functions cannot be used with new. This means, of course, that they do not have a prototype property and cannot be used to create an object with the classically-inspired syntax. new (() => {}) … Read more
First: A simple solution will be to create a component for the content inside a map function and pass the values as props and when you call the function from the child component you can pass the value to the function passed down as props. Parent deleteTodo = (val) => { console.log(val) } todos.map(el => … Read more