Mega Code Archive
Global and Local Variable Scope Demonstration
<![CDATA[
<HTML>
<HEAD>
<SCRIPT LANGUAGE="JavaScript">
var globalVar = "Boy" // global
var globalVar2 = "dog" // global
function demo() {
var globalVar2 = "cat" // local version of globalVar2
var output = globalVar2 + " does not belong to " + globalVar + ".<BR>"
document.write(output)
}
</SCRIPT>
</HEAD>
<BODY>
<SCRIPT LANGUAGE="JavaScript">
demo();
document.write(globalVar2 + " belongs to " + globalVar + ".")
</SCRIPT>
</BODY>
</HTML>
]]>