Javascript: modifying a function which prints out variable number of arguments to be recursive?

Question

I've created a Javascript function which takes a variable number of arguments and prints each out on a new line:

var printOut = function () {
    for (var i = 0; i < arguments.length; i++) {
        document.writeln(arguments[i] + '<br>');
    }
};

printOut('a', 'b', 'c');
printOut('d', 'e');

The function prints out:

a
b
c
d
e

What I'd like to know is whether it's possible to take this function and make it recursive, but the output is in the same order? From what I've studied, recursion would reverse the order of the output no?

Fiddle: https://jsfiddle.net/klems/kao9bh6v/

Can you give an example of how you'd like to use the recursive function? Would you still call printOut('a', 'b', 'c') then printOut('d', 'e') ? — shanzilla
– shanzilla, Commented Mar 8, 2017 at 15:57

Nina Scholz · Accepted Answer · 2017-03-08 16:17:56Z

3

You could slice the arguments and call the function again with apply.

var printOut = function () {
    if (arguments.length) {
        console.log(arguments[0]);
        printOut.apply(null, [].slice.call(arguments, 1));
    }
};

printOut('a', 'b', 'c');
printOut('d', 'e');

edited Mar 8, 2017 at 16:17

answered Mar 8, 2017 at 16:07

Nina Scholz

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