I am struggling to understand the concepts in this lesson. I understand how it all therotically works, however when I run the code in the Repl.it environment, it comes back as undefined. Shouldn’t the quiz return the value of the output rather than being undefined?
There is probably a very simple answer but I have read/ searched with no luck. Here is my code.
// Declare your variable here
var myGlobal = 10;
function fun1() {
// Assign 5 to oopsGlobal Here
oopsGlobal = 5;
}
// Only change code above this line
function fun2() {
var output = "";
if (typeof myGlobal != "undefined") {
output += "myGlobal: " + myGlobal;
}
if (typeof oopsGlobal != "undefined") {
output += " oopsGlobal: " + oopsGlobal;
}
console.log(output);
}
So when I call the fun2 function, I get the result myGlobal = 10. Why is it that when I call the fun1() function, it is not defined? Thanks for your reply
So to confirm, the reason fun2() funtion prints the result of "myGlobal: " + myGlobal; vs " oopsGlobal: " + oopsGlobal is because the var MyGlobal value of 10 overrides the oopsGlobal value of 5. Is this correct?
I am just confused because “Variables which are used without the var keyword are automatically created in the global scope.” Under this logic, I just thought it would print the oopsGlobal value.
