Type checker for JS that actually works.

checktype.js

/**
 *  Taken from http://james.padolsey.com/javascript/checking-types-in-javascript/ 
 */

function type(o){
    return !!o && Object.prototype.toString.call(o).match(/(\w+)\]/)[1];
}


type(101);          // returns 'Number'
type('hello');      // returns 'String'
type({});           // returns 'Object'
type([]);           // returns 'Array'
type(function(){}); // returns 'Function'
type(new Date());   // returns 'Date'
type(document);     // returns 'HTMLDocument'


// For example, to test for an Array:
if( type([1,2,3,4,5]) === 'Array' ) doStuff();