Field validation

Hey,
So for example if you have a date field as dateofPM and you want to prevent the user to choose a date, which is before the date of the CreatedOn of the record 
Below is a Example of the code:
 

Hope this helps.

 

thanks but i want it in freedom ui, so where to write this js code

Shaurydeep Saxena,

You can see an example of a validator on a Freedom UI page here: https://academy.creatio.com/docs/8.x/dev/development-on-creatio-platform/platform-customization/freedom-ui/customize-page-fields/examples/implement-the-field-value-validation

Ryan

Ryan Farley,

Thanks Ryan, I tried this, but it didn't work, I will share my code here of this approach meanwhile I tried applying validation popup using handler, if you can suggest me any handler/function which will prevent saving the record if the control passes to this handler? this is my handler code: