javascript - show multiple alert in one message in jquery -


i have multiple required field controls on aspx form.

now want show validation message on button click if not filled or checked.

i want on 1 message in jquery.

here jquery code:-

$(document).ready(function () {         $('#btnsave').click(function (e) {             if (!validatetitle() || !validateprefix() || !validatetextboxes()) {                 e.preventdefault();             }         });         function validatetitle() {             if ($("#ddltitle").val() > "0") {                 if ($("#ddltitle").val() == "1104" && $("#txttitle").val() === "") {                     alert("please enter text in other title");                     return false;                 }                 return true;             } else {                 alert('please select title');                 return false;             }         }         function validateprefix() {             if ($("#ddlprefix").val() > "0") {                 if ($("#ddlprefix").val() == "1110" && $("#txtprefix").val() === "") {                     alert("please enter text in other prefix");                     return false;                 }                 return true;             } else {                 alert('please select prefix');                 return false;             }         }         function validatetextboxes() {             if ($("#txtfirstname").val() === "") {                 alert('first name required');                 return false;             }             if ($("#txtmiddlename").val() === "") {                 alert('middle name required');                 return false;             }             if ($("#txtlastname").val() === "") {                 alert('last name required');                 return false;             }             if ($("#txtfathername").val() === "") {                 alert('father name required');                 return false;             }             if ($("#txtcurrentcompany").val() === "") {                 alert('current company required');                 return false;             }             if ($("#txtdateofjoin").val() === "") {                 alert('date required');                 return false;             }             if ($("#txtcurrentexp").val() === "") {                 alert('current experience required');                 return false;             }             return true;         }     });

try below code 

  var errarr = [];   $(document).ready(function () {     $('#btnsave').click(function (e) {          e.preventdefault();          validatetitle();          validateprefix();          validatetextboxes();            if(errarr.length > 0) {                alert(errarr.join("\n"));              errarr = [];              return false;            }     });      function validatetitle() {         if ($("#ddltitle").val() > "0") {             if ($("#ddltitle").val() == "1104" && $("#txttitle").val() === "") {                     errarr.push("please enter text in other title");              }          } else {              errarr.push('please select title');          }                 }     function validateprefix() {         if ($("#ddlprefix").val() > "0") {             if ($("#ddlprefix").val() == "1110" && $("#txtprefix").val() === "") {                 errarr.push("please enter text in other prefix");             }                    } else {            errarr.push('please select prefix');          }              }     function validatetextboxes() {         if ($("#txtfirstname").val() === "") {            errarr.push('first name required');          }         if ($("#txtmiddlename").val() === "") {             errarr.push('middle name required');          }         if ($("#txtlastname").val() === "") {             errarr.push('last name required');          }         if ($("#txtfathername").val() === "") {            errarr.push('father name required');          }         if ($("#txtcurrentcompany").val() === "") {             errarr.push('current company required');          }         if ($("#txtdateofjoin").val() === "") {             errarr.push('date required');          }         if ($("#txtcurrentexp").val() === "") {            errarr.push('current experience required');          }                } });

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