Pass unknown number of arguments into javascript function

Question

Is there a way to pass an unknown number of arguments like:

var print_names = function(names) {
    foreach(name in names) console.log(name); // something li         


        

Answer 1

There is a hidden object passed to every function in JavaScript called arguments.

You would just use arguments.length to get the amount of arguments passed to the function.

To iterate through the arguments, you would use a loop:

for(var i = arguments.length; i--) {
   var arg = arguments[i];
}

Note that arguments isn't a real array, so if you needed it as an array you would convert it like this:

var args = Array.prototype.slice.call(arguments);