Nodejs Array ForEach forEach(fun, thisp)

Method Source Code

/**// www  .  ja v a  2 s.  co m
 * Array.prototype.forEach Polyfill
 */

Array.prototype.forEach = function(fun, thisp) {
   "use strict";
   if (this === void 0 || this === null) {
      throw new TypeError();
   }
   var t = Object(this);
   var len = t.length >>> 0;
   if (typeof fun !== "function") {
      throw new TypeError();
   }
   for (var i = 0; i < len; i++) {
      if (i in t) {
         fun.call(thisp, t[i], i, t);
      }
   }
};

/* End of file foreach.js */

Related

1. forEach(fn)

   Array.prototype.forEach = function(fn)
       for (var i=0;i<this.length;i++)
           fn(this[i]);
   

2. forEach(fn, context)

   Array.prototype.forEach = function(fn, context) {
     if (typeof fn != "function") {
       throw new TypeError(fn + " is not a function");
     if (typeof context === 'undefined') {
       context = this;
     for (var i = 0, l = this.length; i < l; ++i) {
       fn.call(context, this[i], i, this);
   ...
   

3. forEach(fun /*, thisp */)

   Array.prototype.forEach = Array.prototype.forEach || function(fun ) {
     "use strict";
     if (this === void 0 || this === null) throw new TypeError();
     var t = Object(this);
     var len = t.length >>> 0;
     if (typeof fun !== "function") throw new TypeError();
     var thisp = arguments[1];
     for (var i = 0; i < len; i++) {
       if (i in t) fun.call(thisp, t[i], i, t);
   ...
   

4. forEach(fun /*, thisp*/)

   Array.prototype.forEach = function(fun )
       var len = this.length;
       if (typeof fun != "function")
         throw new TypeError();
       var thisp = arguments[1];
       for (var i = 0; i < len; i++)
         if (i in this)
   ...
   

5. forEach(fun /*, thisp*/)

   Array.prototype.forEach = Array.prototype.forEach || function(fun ) {
       var len = this.length >>> 0;
       if (typeof fun != "function") {
           throw new TypeError();
       var thisp = arguments[1];
       for (var i = 0; i < len; i++) {
           if (i in this) {
               fun.call(thisp, this[i], i, this);
   ...
   

6. forEach(func)

   Array.prototype.forEach = function(func)
     for(var i = 0, l = this.length; i < l; i ++)
       func(this[i]);
   };
   

7. forEach(func)

   Array.prototype.forEach = function (func) {
       var length = this.length;
       for (var i = 0; i < length; i++) {
           func(this[i]);
   

8. forEach(func, thisObj)

   Array.prototype.forEach = Array.prototype.forEach || (Array.prototype.forEach = function(func, thisObj) {
     for (var i=0, l=this.length; i<l; ++i) {
       func.call(thisObj, this[i], i, this);
     };
   });
   

9. forEach(iterator)

   Array.prototype.forEach = function(iterator) {
     for (var i = 0, len = this.length; i < len; i++) {
       iterator(this[i], i);
   };