Does JavaScript support Method Overloading? Please provide an explanation with your answer. This question is open for the next 2 weeks. I will post the correct answer on May 15, 2008.

Let the games begin! :)

The official answer is NO. Technically however, it is possible. Allow me to explain if I may:

Copy this code snippet, paste and save it, in your favorite text editor and run it. Of course, ignore any wrong/missing tags, etc:

================

Untitled

function overload() {
var howMany = arguments.length;
var sum;

if(howMany == 1) {
sum = arguments[0] + 5;
} else {
sum = arguments[0] + arguments[1];
}

alert(sum);
}

1 argument - overload(10)

2 arguments - overload(10, 10)

================

The trick is that every function has an "arguments" property. By accessing the number of arguments you can technically perform method overloading and get away with it ;)