Posted By

1man on 12/02/07

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javascript
function

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Last Edited at 12/02/07 06:19am

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Optional Function Arguments

/ Published in: JavaScript

Simple way of allowing functions to take optional arguments. Always place the optional arguments last, so you don't have to explicitly pass an argument as "undefined".

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function optionalArguments(a, /*optional*/b){
	if(!b){b = []};//If b isn't set, create an empty array
	//OR shorthand for this
	b = b || [];
	/*
	 * The OR operator looks to see if b is true, if it is it skips
	 * creating the Array. If b is false it creates the array. Not
	 * very readable.
	 */
}