Nodejs Array Push push()

Method Source Code

var a = ['a', 'b', 'c'];
var b = ['x', 'y', 'z'];
var c = a.push(b, true);
console.log("a : " + a); // a is  ['a', 'b', 'c', ['x', 'y','z'], true]
console.log("c : " + c); // 5

//push can be implemented this way :

Array.prototype.push = function () {
    this.splice.apply(/*from   w  ww  . j a v a 2  s  . c  o m*/
        this,
        [this.length, 0].concat(Array.prototype.slice.apply(arguments))
    );

    return this.length;
};

var d = ['a', 'b', 'c'];
var e = ['x', 'y', 'z'];
var f = d.push(e, false);

console.log(d);
console.log(f);

Related

1. push()

   if (!Array.prototype.push) {
   Array.prototype.push = function () {
       var i, iLen;
       for (i = 0, iLen = arguments.length; i < iLen; ++i) {
           this[this.length] = arguments[i];
   };
   

2. push()

   Array.prototype.push = function () {
     for (var i=0; i<arguments.length; i++)
       this[this.length] = arguments[i];
     return this.length;
   

3. push()

   Array.prototype.push = function()
     for (var i = 0; i < arguments.length; i++)
       this[this.length] = arguments[i];
     return arguments[i - 1];
   };
   

4. push(data)

   Array.prototype.push = function(data) {
     this[this.length] = data;
     return this.length;
   };
   

5. push(elem)

   Array.prototype.push = function(elem) {
     this[this.length] = elem;
     return ++this.length;
   };