contact form code.js

var contactForm = $(".contact-form");
    if(contactForm.length){
      var contactResault = $("body").append("<span class='form-resault'></span>").find(".form-resault");
      contactForm.each(function(){
        var this_form = $(this);
        var contactFormInput = this_form.find(".form-control");
        this_form.on("submit", function() {
		$("#cnt-btn").removeClass("fa-paper-plane").addClass("fa-spinner fa-spin");
          var form_data1 = $(this).serialize();
          if(!contactFormInput.parent().hasClass("input-error") && contactFormInput.val()){
            $.ajax({
              type: "POST", 
              url: "php/contact.php", 
              data: form_data1,
              success: function() {
				$("#cnt-btn").removeClass("fa-spinner fa-spin").addClass("fa-paper-plane");
				$("#c-name").val("");
				$("#c-email").val("");
				$("#c-phone").val("");
				$("#c-message").val("");
                contactResault.addClass("correct");
                contactResault.html("Your message has been sent. Our team will get back to you in 2 business days.");
                setTimeout(function(){
                  contactResault.removeClass("incorrect").removeClass("correct");
                }, 3000);
              }
            });
          } else{ 
            if(contactFormInput.val() === ""){
              var contactFormInputEmpty = contactFormInput.filter(function(){ 
                return $(this).val() === ""; 
              });
              contactFormInputEmpty.parent().addClass("input-error");
            }
			$("#cnt-btn").removeClass("fa-spinner fa-spin").addClass("fa-paper-plane");
            contactResault.addClass("incorrect");
            contactResault.html("You must fill in all the required fields.");
            setTimeout(function(){
              contactResault.removeClass("incorrect").removeClass("correct");
            }, 3000);
          }
          return false;
        }); 
      });
    }