Form validation for JQ

(function () {                $("#but"). Click (function () {                    if($ ("#name"). val () = = "" | | $ ("#name"). val () = = "Please enter your real name") {alert ("Please enter patient name"); return false; }                    if($ ("#tel"). val () = = "" | | $ ("#tel"). val () = = "Enter your favorite phone number") {alert ("Please enter your phone number"); return false; }                    if($ ("#date"). val () = = "" | | $ ("#date"). val () = = "Click to select a date of appointment") {alert ("Please enter your date of appointment"); return false; }                    varTels =/^ ((\d{11}) |^ ((\d{7,8}) | ( \D{4}|\D{3})-(\d{7,8}) | (\d{4}|\d{3})-(\d{7,8})-(\d{4}|\d{3}|\d{2}|\d{1}) | (\d{7,8})-(\d{4}|\d{3}|\d{2}|\d{1})) $/; varPattern =/^[\u4e00-\u9fa5]{1,6}$/; if(!pattern.test ($ (' #name ')) (Val ())) {Alert ("The right name! "); return false; }                    if(!tels.test ($ (' #tel ')) (Val ())) {Alert ("Please fill in the correct phone number!" "); return false; }                })            })();

Form validation for JQ