Multi-line / Block comments are used when you need to comment on multiple lines that are placed together.

MultipleLinesComments

<script>
  /* initialize and call a function
  which takes users name in a variable 
  and welcome them on page */
  
  function greetingMessage() {
    var name = promp("Type your first name.");
    document.write("Welcome to our page " + name + "!");
  }

  greetingMessage();

</script>