JavaScript

Variable Declaration

Before using a variable in a JavaScript program it must be declared; either by you, or implicitly by JavaScript. If you assign a value to an undeclared variable JavaScript will declare it for you but that variable then becomes global, so it's best to explicitly declare it.

	var name;
	name = "Homer Simpson";
	- or -
	var name = "Homer Simpson";

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	First created Jun 15, 2010 ~ Last revised June 15, 2010