Javascript Introduction

Web Design Specialists.

Javascript Introduction

Javascript is a scripting language designed to extend the functionality of web pages. Typically written as part of an HTML document a script controls the elements of the page and reacts to user actions. Javascript uses simple commands which manipulate the parts of a web page. We will discuss and introduce you to the various components used in javascript such as variables, statements, if then else logic, loops, objects and functions.

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Javascript code is placed in your HTML source code between the <head> and </head> tags of your HTML document. The block of Javascript code is surrounded by the <script> and </script> tags. Multiple blocks of Javascript code are allowed in a single HTML document as long as each individual block of code is surrounded by the <script> and </script> tags.

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<html>
 <head>
  <title>Javascript Example</title>
    <script language="Javascript">
      <!-- Hide Javascript code from old browsers
        document.writeln("Hello World");
      // end hiding code -->
    </script>
 </head>
 <body>
     .
     .
     . 
 </body>
</html>



Intro  |  Variables  |  Statements  |  If then else  |  Loops  |  Objects  |  Functions  |  HOME