Javascript Programming Tutorials, Guides & Best Practices

• Variables are accessible within the entire function they are declared in.
• Example:

     function test() {
       var y = 20;
       console.log(y); // 20
     }
     console.log(y); // Error: y is not defined

Let’s start with a simple script that displays a message in the browser’s console.

console.log("Hello, World!");