Here you can find the source of pushAll(x)
Array.prototype.pushAll = function (x) { for (var i = 0; i < x.length; i += 1) { this.push(x[i]);//from w w w. ja v a2s. c om } };
Array.prototype.pushAll = function (array) { array.forEach(function(x) {this.push(x)}, this); };
Array.prototype.pushAll = function (items) { if (! Array.isArray (items)) { throw new TypeError("Argument must be an array"); return this.push(...items); };
Array.prototype.pushAll = function(items) { if (!Array.isArray(items)) { throw new TypeError("Argument must be an array."); return this.push(...items); };
Array.prototype.pushAll = function (items) { if (!Array.isArray(items)) { throw new TypeError("Argument must be an array."); return this.push(...items); };
Array.prototype.pushAll = function (iterable) { for (const value of iterable) { this.push(value)
Array.prototype.pushArray = function(arr) { if (arr) { for (var i = arr.length - 1; i >= 0; --i) this.push(arr[i]);
Array.prototype.pushArray = function(arr) {
this.push.apply(this, arr);
};
Array.prototype.pushArray = function(arr) { for (var i = 0; i < arr.length; ++i) this.push(arr[i]);
Array.prototype.pushArray = function(arr) {
this.push.apply(this, arr);
};