4-add-javascript/0-code-along/lesson-05/variables.html

<!DOCTYPE html>
<html>
  <head>
    <title>Variables</title>
  </head>
  <body>
    <script>

      /*
        We learned about:
        - Rules for naming variable
        - Rules for re-assigning variable
        - 3 ways of creating a variable: 
          - const by default
          - let, if we have to change a variable
          - var, the older ways. Don't use it!
      */ 
      let variable1 = 3;
      console.log(variable1);

      const calculation = 2 + 2;
      console.log(calculation);
      console.log(calculation + 2);

      const result = calculation + 2;
      console.log(result);

      const message = 'hello';
      console.log(message); console.log(';');

      variable1 = 5;
      console.log(variable1);

      variable1 = variable1 + 1;
      console.log(variable1);

      const variable2 = 3;
      var variable3 = 3;

      console.log(typeof variable2)
    </script>
  </body>
</html>