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Variables in JavaScript





















<html>
   <head>
      <title>Variable example</title>
      <script language="JavaScript">	
         function ClickMe()
         {
             var alert_text = "Hi, this is the variable tutorial";
              alert(alert_text);
         }				
      </script>
   </head>
   <body>
      <form>
         <input type="button" name="btnComments" value="Click Me" onclick="javascript:ClickMe();">
      </form>
   </body>
</html>








function ClickMe() {
    var new = "Hi, this is the variable tutorial";
    alert(new);
}






function ClickMe() {
    var 00alert_text = "Hi, this is the variable tutorial";
    alert(00alert_text);
}







Global and local variable








var global_variable = "This is the global variable";

function ClickMe() {
    var local_variable = "This is the local variable";
    alert(local_variable);
    ClickMeAgain();
}

function ClickMeAgain() {
    alert(global_variable);
}





Posted By  -  Karan Gupta
 
Posted On  -  Wednesday, December 1, 2010

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