what is this code?

[boxxxie]

found in validate.js

 var __indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; }

i'm just curious. in validate.js many of the names are prefixed with an _ but not in other files.

[boxxxie]

line 55 of validate.js

return ref = cvc.length, __indexOf.call((ref1 = Cards.fromType(type)) != null ? ref1.cvcLength : void 0, ref) >= 0;

i have no idea what this is doing. how is __indexOf useful in this code? __.indexOf returns a value, however it doesn't look like it's being assigned to anything.

why is this code like this. how can someone understand this?

I am trying to get your code to pass the jshint linter. i am refactoring it so that i uses angular to make an HTTP call, either through $http or restangular. I am having a lot of trouble understanding validate.js.

[dariocravero]

Hey @boxxxie, __indexOf seems to be a polyfill of indexOf to provide backwards compatibility with older browsers