Embedding JavaScript

Embedding Inline

You can embed javascript directly inline using an attribute

<body onload="window.alert("message");">

<body> 
   <script> 
      window.alert("message"); 
   </script> 
</body>

Embedding Script Tags

This can be either in the <head> or in <body>

<!DOCTYPE html> 
<head> 
<script type="text/javascript"> 
   function MyFun() { 
      var myValue = document.getElementById('myBox').value;  
      if (myValue.length == 0) { 
         alert("blank box"); 
      } 
   } 
</script> 
</head/> 
<body> 
   <input type="text" id="myBox"> 
   <input type="submit" value="Press" onclick="MyFun()"/> 
</body>