how to know item in dropdown is selected or not nd then show popup..

Question

Hi I have the button on which i am showing the popup window. this button is diabled while page laod. When I'll select the item from dropdown on same form the button will be enabled. ok ? But second time it will remain as it is means enabled. I want to restrict button click till the item will select from Dropdown. How to do?

Answer 1

Assuming you are talking about a web application, you can do this using JavaScript.

You can set a variable on the 'onchange' event for the drop down list.

onchange event fires when the contents of the object or selection have changed.