fix empty contact form submit

src/views/Home.vue

@@ -211,6 +211,9 @@ export default {
   methods: {
     submitForm() {
       event.preventDefault()
+	  if(this.name == null || this.email == null || this.message == null)
+		alert('Your name, email, or message cannot be empty.')
+	  else {
     	  document.querySelector('input[type=text]').disabled = true
 	      document.querySelector('input[type=email]').disabled = true
     	  document.querySelector('textarea').disabled = true
@@ -233,4 +236,5 @@ export default {
 	  }
     }
   }
+}
 </script>