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A Simple Example 1 -- Hello World with a function

You may freely write JavaScript in any place in your Web page.

However if you wish to trigger actions from certain events you may wish to put your JavaScript in functions in the Head section of the document.

The Hello World program called from a function is as follows:

<html>
 <head>
   <script language="javascript">

   function init(){
   
   var str = "Hello World";

   window.alert(str);
 
   document.write("<h1>" + str + "</h1>");
 
   }
  
   </script>
 </head>

<body onLoad="init()">

</body>
</html>

The operation of the program is essentially the same except that

we write a function init() to do the job.
we call the function when the Web page loads with the onLoad="init()" attribute in the body tag.

Dave Marshall
9/28/2001