[Forums] How to call javascript function on button click

Hi Pradip,

In every button/Link you have the property Validation this method can be set to one of the following 3 options:
·        Server
·        Client & Server
·        None
As for the Server option there will be no client side validation and all the validation checks should be written in your Save action.

The Client & Server option will validate two aspects Client side: Mandatory fields and Datatypes. If these two aspects are seem valid then the server part of this validation will run and behave the same as if you would chose the Server option.

If you want to read anything more about how to validate End-User Inputs check this link: http://www.outsystems.com/help/servicestudio/9.1/index.htm#t=Web_User_Interface%2FValidate_End-User_Inputs.htm

Regarding your question: "How to call JavaScript function on Button Click" There are some ways to do this but the easiest way is the action "RunJavaScript" in the "HTTPRequestHandler" extension. 
Then you can do stuff like this:
 

Kind Regards,
Martijn Habraken