Essential Javascript -- A Javascript Tutorial

By Patrick Hunlock
2007-12-02

Output (alert)

The second method is to use a browser alert box. While these are incredibly useful for debugging (and learning the language), they are a horrible way to communicate with the user. Alert boxes will stop your scripts from running until the user clicks the OK button, and it has all the charm and grace of all those pop-up windows everyone spent so many years trying to get rid of!

<html>
  <head>
  </head>
  <body>
     <script type='text/javascript'>

        alert('Hello World!');

     </script>
  </body>
</html>

You can see this alert in action by clicking here!

Tutorial Pages:
» Essential Javascript -- A Javascript Tutorial
» Getting Started
» In-Line Javascript
» External Javascript
» Javascript is case sensitive
» Output (writeln)
» Output (alert)
» Output (getElementById)
» Input (One Click To Rule Them All)
» Input (User Input)
» Javascript is an Event Driven Language
» Comments
» Variables
» Variable Scope
» Special Keywords
» Arithmetic Operators
» Logical and Comparison Operators
» JavaScript Conditionals: IF
» JavaScript Conditionals: SWITCH
» JavaScript Conditionals: Shorthand Assignment
» JavaScript Conditionals: Ternary Operators
» JavaScript Loops: FOR
» JavaScript Loops: FOR/IN
» JavaScript Loops: WHILE
» Bringing It All Together
» DHTML: Dynamic HTML
» Conclusion

copyright © 2006, 2007 by Patrick Hunlock

Related Tutorials:
» JavaScript Debugging Techniques with Firebug
» Striped Tables Using JavaScript
» Opening PDFs in a New Window with JavaScript
» Submit Forms Conditionally using JavaScript
» How to Setup a Randomising Function
» Introduction to JavaScript Tutorial