Here you can find the source of append(arr)
Array.prototype.append = function (arr) { if (arr) {/* ww w . j a va 2s.co m*/ for (var i = 0; i < arr.length; i++) { this.push(arr[i]); } } return this; };
Array.prototype.append = function(){ var newarray = this; for(var j = 0; j < arguments.length; j++){ newarray.push(arguments[j]); return newarray; };
Array.prototype.append = function(a) {
this.push.apply(this, a)
Array.prototype.append = function(ar) { this.length += ar.length; for (var i = 0, len = this.length, len2 = ar.length; i < len2; i++) { this[len + i] = ar[i]; };
Array.prototype.append = function(array)
this.push.apply(this, array)
Array.prototype.append = function(e) {
this.push(e);
Array.prototype.append=function(from) { this[this.length]=from; return this;
Array.prototype.append = function(item) { for (let i = 0; i !== this.length; i++) { if (this[i] === null || this[i] === undefined) { this[i] = item; return i; return this.push(item) - 1; }; ...