change text "This field is required."

Hey guys,

how can i change the text "This field is required." in listing submit form? ( i want to adapt it to german), and is it possible to also have a pop up showing, in case the user presses the button to go on, but hasnt filled all the items?

 

Hello,

1. Go to library\front_end\submit_validation.php present in your theme directory and follow the instruction as shown in image given below





2. It is not possible to pop up it.


Thanks & Regards
Gourav Shrivastava

 

but a freelancer should be able to program that right?