Ken Adeniji's Blog

To determine how many arguments were passed to a function?

Check the length, of the array like arguments variable, arguments.length.

To determine, how many variables, a function expects? 
Write the name of the function, and retrieve its length property.

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

	sayHi("Cat", "Alice")

	//To determine how many arguments a function expects
	console.log(sayHi.length);

http://javascript.info/tutorial/arguments

Tags: JavaScript

This entry was posted on September 29, 2013 at 5:05 am and is filed under Uncategorized. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.