[removed] Two separate scripts - share variables?

Question

If I have two separate scripts in an HTML page with JavaScript are the variables shared between the entire page? Or only within their own declarations?

Example:

Answer 1

In this case, title would be a global variable. You need to encapsulate the variable within a scope. There are various methods for doing so. My preference is a self-executing anonymous function, which would be done like so:

    (function() {
       var title = "Hello world!";

       alert(title); // would pop up "Hello World!" since title is in scope
    });

    alert(title); // title doesn't exist, because it's outside the scope