JS global variable, local variable

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<title> example 3-4</title><script language= "javascript" ><!--    var nA = ten;                        // define global variable na    function func ()    {        var nA = +;                    // define local variable na and output        document.write ("Na of the <li> local scope:" + na);    }    Func ();                             // calling function func    document.write ("Na of the <li> global scope:" + na);    // output global na--></script>

Output:

• Na:20 of local Action range
• Na:10 of the global scope

JS global variable, local variable