Arrow函数如何在ECMAScript6中工作

Question

I am working on mathematical program and ready to implement new feature of ECMAScript6 Arrow . Which is very similar to Lambda expression in C# .

let square = y => y * y;
console.log(square(4));

I achieved my goal after using Arrow function but still confuse how the Arrow function is works.

Is it work like Lambda expression.Can anyone guide me on that.

Thanks

Answer 1

It's essentially doing this:

var square = function(y) {
  return y * y;
}.bind(this);

where this is bound to the outer scope.