JavaScript variable number of arguments to function

Question

Is there a way to allow "unlimited" vars for a function in JavaScript?

Example:

load(var1, var2, var3, var4, var5, etc...) load(var1) 

Answer 1

Sure, just use the arguments object.

function foo() {   for (var i = 0; i < arguments.length; i++) {     console.log(arguments[i]);   } } 

Answer 2

In (most) recent browsers, you can accept variable number of arguments with this syntax:

function my_log(...args) {      // args is an Array      console.log(args);      // You can pass this array as parameters to another function      console.log(...args); } 

Here's a small example:

function foo(x, ...args) {   console.log(x, args, ...args, arguments); }  foo('a', 'b', 'c', z='d')  =>  a Array(3) [ "b", "c", "d" ] b c d Arguments ​    0: "a"     ​1: "b"     ​2: "c"     ​3: "d"     ​length: 4 

Documentation and more examples here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/rest_parameters