Creating the dispatch form
As mentioned earlier, we will create the dispatch form now. Create a new HTML file named as Dispatch and enter the following code in it:
<!-- Dispatch.html -->
<!DOCTYPE html>
<html>
<head>
<base target="_top">
<link rel="stylesheet" href="//ssl.gstatic.com/docs/script/css/add-ons1.css" />
<script src="//ajax.googleapis.com/ajax/libs/jquery/ 1.10.2/jquery.min.js"></script>
<script>
// On document load, assign submit function to the submit
// button's click event
$(function(){
$("#btnSubmit").click(submit);
});
function submit(){
// Remove already displayed messages, if any.
$("#success,#error").remove();
this.disabled = true;
google.script.run
.withSuccessHandler(function(msg,elem){
elem.disabled = false;
showSuccess(msg,elem);
})
.withFailureHandler(function...
