Question

var obj = [ "one", "two", "three"];

$.each(obj, function() {
   console.log(this);
});

The output I get is

{ '0': 'o', '1': 'n', '2': 'e' }
{ '0': 't', '1': 'w', '2': 'o' }
{ '0': 't', '1': 'h', '2': 'r', '3': 'e', '4': 'e' }

I suppose to get “one” “two” “three”, but I get the following weird results, anyone can explain?

Answer 1

this is always an object there. A string object consists of key/value pairs where keys are indices and values are characters at that index in the string. Try Object("foo") to create such an object yourself.

By using strict mode you can suppress that:

$.each(obj, function() {
  "use strict";
  console.log(this);
});