Sharepoint item locking after getting approved

Question

I have a sharepoint custom list which has 5 columns ..the user should fill in first three columns and the other two should be locked for filling ..when the user enters the items and start the workflow if the workflow gets approved the 3 columns should be locked for editing and then the other two should be available for editing .

Can someone please tell me how can i achieve this.

Thanks

Answer 1

시도 :

    function ref(){
        $.ajax({
            url: 'checktime.php',
            success: function(refresh){
                if($.trim(refresh) == "true"){
                    $('#tv').load('tv.php', function(){
                         setTimeout(ref, 60000); // Do again after 60s
                    });
                }   
            }
        });
    }

    ref(); // First run

.