sarfraznawaz2005

// simple way to convert an object to an array with all butter of array using Array.slice
function foo(a, b, c){
  var argsArray = [].slice.apply(arguments);

  argsArray.push(4,5);
  alert(argsArray[4]); //5
}

foo(1, 2, 3);

sarfraznawaz2005

function format(string) {  
    var args = arguments;  
    var pattern = RegExp("%([1-" + (arguments.length-1) + "])", "g");
    return string.replace(pattern, function(match, index) {  
        return args[index];  
    });  
}; 

format("a %1 and a %2", "cat", "dog");
//"a cat and a dog"

sarfraznawaz2005

// result will vary browser wise
alert(Object.getOwnPropertyNames(Function.prototype));

sarfraznawaz2005

//create a new array method that removes a member
Array.prototype.remove = function(member) {
  var index = this.indexOf(member);
  if (index > -1) {
    this.splice(index, 1);
  }
  return this;
}

['poppy', 'sesame', 'plain'].remove('poppy'); //["sesame", "plain"]

sarfraznawaz2005

// We know typeof has problms, here is a better solution

Object.toType = function(obj) {
  return ({}).toString.call(obj).match(/\s([a-z|A-Z]+)/)[1].toLowerCase();
}

// Examples:

Object.toType(window); //"global" (all browsers)
Object.toType([1,2,3]); //"array" (all browsers)

sarfraznawaz2005

function concatenate(){
  // return arguments.join('');                      // won't work. arguments is not a real array.
  // return [].splice.call(arguments,0).join('');    // old 'n busted
     return Array.prototype.join.call(arguments,''); // new hotness
}
 
concatenate('good',2,'go');
// ==> 'good2go'

sarfraznawaz2005

(function($){
 
    // store original reference to the method
    var _old = $.fn.method;
 
    $.fn.method = function(arg1,arg2){
 
        if ( ... condition ... ) {
           return  .... 
        } else {           // do the default

sarfraznawaz2005

console.log( 104.249834 | 0 ); //104
console.log( 9.999999 | 0 );   // 9

// bitwise operators operators call ToInt32 on each expression to be evaluated

sarfraznawaz2005

var foo = [1, 2, 3, 4, 5, 6];
foo.length = 3;
foo; // [1, 2, 3]

sarfraznawaz2005

<?php
 /**
 *
 * @flatten multi-dimensional array
 *
 * @param array $array
 *
 * @return array
 *
 */