CODEWITHSUNDEEP
javascriptrecursion
leonOsmania
leonOsmania

Reputation: 45

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

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/

Upvotes: 3

Views: 38

Answers (1)

Nina Scholz
Nina Scholz

Reputation: 386700

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');

Upvotes: 3

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