form.submit(); // submit form

"use strict";
var KTCareersApply=function(){var t,e,i;
return{init:function(){
 i=document.querySelector("#kt_careers_form"),
 t=document.getElementById("kt_careers_submit_button"),
 $(i.querySelector("[name="type_reference"]")).on("change",(function(){e.revalidateField("type_reference")})),
 $(i.querySelector("[name="start_date"]")).flatpickr({enableTime:!1,dateFormat:"d, M Y"}),
 e=FormValidation.formValidation(i,{fields:{first_name:{validators:{notEmpty:{message:"First name is required"}}},
 project_reference:{validators:{notEmpty:{message:"Project reference is required"}}},
 age:{validators:{notEmpty:{message:"Age is required"}}},
 city:{validators:{notEmpty:{message:"City is required"}}},
 email:{validators:{notEmpty:{message:"Email address is required"},
 emailAddress:{message:"The value is not a valid email address"}}},
 salary:{validators:{notEmpty:{message:"Expected salary is required"}}},
 type_reference:{validators:{notEmpty:{message:"Type Reference is required"}}},
 start_date:{validators:{notEmpty:{message:"Start date is required"}}}},
 plugins:{trigger:new FormValidation.plugins.Trigger,
 bootstrap:new FormValidation.plugins.Bootstrap5({rowSelector:".fv-row",eleInvalidClass:"",eleValidClass:""})}}),
 t.addEventListener("click",(function(i){i.preventDefault(),e&&e.validate().then((function(e){console.log("validated!"),"Valid"==e?(t.setAttribute("data-kt-indicator","on"),
 t.disabled=!0,setTimeout((function(){t.removeAttribute("data-kt-indicator"),
 t.disabled=!1,Swal.fire({text:"Form has been successfully submitted!",
 icon:"success",buttonsStyling:!1,confirmButtonText:"Ok, got it!",
 customClass:{confirmButton:"btn btn-primary"}}).then((function(t){t.isConfirmed,i.submit()}))}),2e3)):Swal.fire({text:"Sorry, looks like there are some errors detected, please try again.",
 icon:"error",buttonsStyling:!1,confirmButtonText:"Ok, got it!",customClass:{confirmButton:"btn btn-primary"}}).then((function(t){KTUtil.scrollTop()}))}))}))}}}();KTUtil.onDOMContentLoaded((function(){KTCareersApply.init()}));

<!--begin::Content-->
<div class="app-content flex-column-fluid">
 <!--begin::Content container-->
 <div class="app-container container-sx">
 <!--begin::Careers - Apply-->
 <div class="card">
 <!--begin::Body-->
 <div class="card-body p-lg-6">


 <!--begin::Form-->
 <form action="private/class/pre_class/pre_class_grava_material_interno.php?nome_material_interno=ttt&comentario=ttt" class="form mb-15" method="get" >


 <!--begin::Input group-->
 <div class="d-flex flex-column mb-5 fv-row">
 <!--begin::Label-->
 <label class="required fs-5 fw-semibold mb-2">Project Reference</label>
 <!--end::Label-->
 <!--begin::Input-->
 <input type="text" class="form-control form-control-solid" placeholder="" name="project_reference" />
 <!--end::Input-->
 </div>
 <!--end::Input group-->

 <!--begin::Input group-->
 <div class="d-flex flex-column mb-5 fv-row">
 <!--begin::Label-->
 <label class="d-flex align-items-center fs-5 fw-semibold mb-2">
 <span class="required">Type Reference</span>
 <i class="fas fa-exclamation-circle ms-2 fs-7" data-bs-toggle="tooltip" title="Your payment statements may very based on selected position"></i>
 </label>
 <!--end::Label-->
 <!--begin::Select-->
 <select name="type_reference" data-control="select2" data-placeholder="Select a type..." class="form-select form-select-solid">
 <option value="Purchase Order">Purchase Order</option>
 <option value="Memo">Memo</option>
 <option value="Name">Name</option>
 <option value="Date">Date</option>
 <option value="Others">Others</option>
 </select>
 <!--end::Select-->
 </div>
 <!--end::Input group-->

 <!--begin::Input group-->
 <div class="d-flex flex-column mb-5">
 <label class="required fs-6 fw-semibold mb-2">Comment (Optional)</label>
 <textarea class="form-control form-control-solid" rows="4" name="experience" placeholder=""></textarea>
 </div>
 <!--end::Input group-->


 <!--begin::Separator
 <div class="separator mb-8"></div>
 <!--end::Separator-->


 <!--begin::Submit-->
 <button type="submit" class="btn btn-primary" >
 <!--begin::Indicator label-->
 <span class="indicator-label">Apply Now</span>
 <!--end::Indicator label-->
 <!--begin::Indicator progress-->
 <span class="indicator-progress">Please wait...
 <span class="spinner-border spinner-border-sm align-middle ms-2"></span></span>
 <!--end::Indicator progress-->
 </button>
 <!--end::Submit-->

 <!--begin::Submit-->
 <button type="submit" class="btn btn-primary" >add
 </button>
 <!--end::Submit-->

 </form>
 <!--end::Form-->


 </div>
 <!--end::Body-->
 </div>
 <!--end::Careers - Apply-->
 </div>
 <!--end::Content container-->
</div>