Tutorials 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

• Enclosed within /<em> </em>/.
• Example:

     /*
      This is a multi-line comment.
      It spans multiple lines.
     */
     console.log("Hello, World!");