How to call the below function in OnClientClick of a button in asp.net

function ValidateModuleList(source, args) {
           var chkListModules = document.getElementById('<%= ChkListMovieName.ClientID %>');
           var chkListinputs = chkListModules.getElementsByTagName("input");
           for (var i = 0; i < chkListinputs.length; i++) {
               if (chkListinputs[i].checked) {
                   args.IsValid = true;
                   return;
               }
           }
           args.IsValid = false;
       }