A quick and dirty way to prototype AJAX

fakejax.js

/**
 * fakejax is a simple way to prototype AJAX. It will give you a random response time of 0-3 seconds
 * and it will also give you a 1 in 10 chance of returning an error
 * @param {String} dummyCall  This is the fake path like "/api/users"
 * @param {Object} returnThis  This is what you want it to return if it's successful like {data:'hi'}
 * @param {Function} callback  This is the callback to your AJAX after it completes
 * @example http://jsbin.com/oguyoz/5
 */
var fakejax = function(dummyCall,returnThis,callback){
  dummyCall = dummyCall || '';
  returnThis = returnThis || '{"data":"Hello World"}';
  callback = callback || function(){};
  if(typeof returnThis == 'function'){
    callback = returnThis;
  }
  var failed = Math.floor(Math.random()*11) //Fake the error (1 in 10 chance)
  ,   processTime = (Math.floor(Math.random()*3))*1000; //0-3 second response time
  console.log('Process time will be: '+ processTime + ' seconds');
  setTimeout(function(){
    if(failed !== 0){
      callback.call(this,returnThis);
    }
    else{
      console.error('Fakejax failed');
      callback.call(this,{"error":0});
    }
  },processTime);
};