每日一道javascript面试题（二）

console.log(a, globalName);//undefined undefined,它们的类型也是undefined
var a;
var globalName= "Javascript";
function Hello(){
   if(typeof globalName === 'undefined'){
        var  globalName= "ES6";
        console.log("hello ",globalName);//hello ES6
    }
    else
         console.log("hello ",globalName);
}
Hello();
console.log(globalName);//Javascipt