How to creating and calling function.html

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    <title>Creating and calling function </title>
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<body>
    <!-- Creating  function 
     syntax: function function_name(){
      block of statement;
     } 
      Rule 
      1. Function name only starts with a letter , an underscore(-).
      2. function name cannot start with a number 
      3. Do not use reserved keyword eg. else, if etc.
      4. Function names are case-sensitive in javascript.
      
      
    -->
     <!-- Ex creating -->
      <script>
        function name(){

             document.write("hello");
        }
        // calling function 
        name();
      </script>
    
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</html>