[UFT] Len of DIV founded by ClassName

[robertosalemi]

Hi,
I'm testing a web application.

In Firebug of Firefox, with this code I have to check the num of div with my className:

Code:

$(document).ready(function() {
  alert( $('.blockPage').length );
});

It displays 0.

In UFT I'm using this code:

Code:

Set loader = Browser("myApp").Page("myApp").Object.getElementsByClassName("blockPage")
var exist = Len(loader)

exist is equals to 8.

Why is there this two different values?

Thanks.