Language Basics JavaScript DHTML

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  4. Global and Local Variable Scope Demonstration



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 + ".
"
    document.write(output)
}




demo();
document.write(globalVar2 + " belongs to " + globalVar + ".")