Accessing variable from different function

Question

I have the following code in HTML which creates a button, that when clicked creates some questions in my page, works fine.

Answer 1

According to How to declare a global variable in a .js file you can define a variable before any function is called and then use it in different functions.

var global1 = "I'm a global!";

function setGlobal () {
    global1= document.getElementById('num_questions').value;
}
function testGlobal () {
    alert(global1);
}

Answer 2

It is not possible to access a function's local variables from outside of that function, so you have four options:

1. Declare a global variable!
2. Write a separate function that grabs the value for you
3. Create an object that contains the value you need
4. Grab the value from within your new function using getElementById()