Function.bind vs Closure in [removed] how to choose?

Question

As said here:

http://jqfundamentals.com/book/index.html

Closures can also be used to resolve issues with the this keyword, which is unique t

Answer 1

What it's referring to are things like this

obj.doSomething = function() {
  var that = this;
  setTimeout(function() {
    // this is the window
    // that is the obj
    that.doSomethingElse();
  }, 50);
};

vs

obj.doSomething = function() {
  setTimeout((function() {
    // this is the obj
    this.doSomethingElse();
  }).bind(this), 50);
};

Benchmark. No noticable difference in chrome.