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How to start automatic download of pdf on after form submission

I am new into PHP and Html , I have a form where I am able to post details using third party service.I want to make this form submission in such a way that after submission this should start pdf download automatically.It should perform 2 actions on same button click. I have gone through many solutions but I am not able to make this work. Here is my form
<div class="modal-body">
<div class="media-container-column" data-form-type="formoid">
<div data-form-alert="" hidden="" class="align-center" > Thanks for filling out the form use this link to Download </div>
<form class="mbr-form" action="https://mobirise.com/ " method="post" data-form-title="Mobirise Form"><input type="hidden" name="email" data-form-email="true" value="bUMCs/mtytHWYRo/XjN7tA1PqfT+NB00KjPTWZfuYXvKQmJxQUOr1gzeKJUJwLqxqXI/Euh3h4TzMmnq0FW5UjTC1AjsnumlJFTc7U5521K+f6PwqF4lRJdVha0cCPLW" data-form-field="Email">
<div data-for="name">
<div class="form-group">
<input type="text" class="form-control px-3" name="name" data-form-field="Name" placeholder="Name" required="" id="name-header15-c">
</div>
</div>
<div data-for="email">
<div class="form-group">
<input type="email" class="form-control px-3" name="email" data-form-field="Email" placeholder="Email" required="" id="email-header15-c">
</div>
</div>
<div data-for="phone">
<div class="form-group">
<input type="tel" class="form-control px-3" name="phone" data-form-field="Phone" placeholder="Phone" id="phone-header15-c">
</div>
</div>
<span class="input-group-btn"><button onClick="header.php" type="submit" class="btn btn-secondary btn-form display-4">Download</button></span>
</form>
</div>
</div>
This form submission is working fine, how can I start downloading pdf after this, any sample code in javascript or php would be helpful.Thanks

You need to add an id="SampleForm" in your form.
<div class="modal-body">
<div class="media-container-column" data-form-type="formoid">
<div data-form-alert="" hidden="" class="align-center" > Thanks for filling out the form use this link to Download </div>
<form id="SampleForm" class="mbr-form" action="https://mobirise.com/ " method="post" data-form-title="Mobirise Form"><input type="hidden" name="email" data-form-email="true" value="bUMCs/mtytHWYRo/XjN7tA1PqfT+NB00KjPTWZfuYXvKQmJxQUOr1gzeKJUJwLqxqXI/Euh3h4TzMmnq0FW5UjTC1AjsnumlJFTc7U5521K+f6PwqF4lRJdVha0cCPLW" data-form-field="Email">
<div data-for="name">
<div class="form-group">
<input type="text" class="form-control px-3" name="name" data-form-field="Name" placeholder="Name" required="" id="name-header15-c">
</div>
</div>
<div data-for="email">
<div class="form-group">
<input type="email" class="form-control px-3" name="email" data-form-field="Email" placeholder="Email" required="" id="email-header15-c">
</div>
</div>
<div data-for="phone">
<div class="form-group">
<input type="tel" class="form-control px-3" name="phone" data-form-field="Phone" placeholder="Phone" id="phone-header15-c">
</div>
</div>
<span class="input-group-btn"><button onClick="header.php" type="submit" class="btn btn-secondary btn-form display-4">Download</button></span>
</form>
</div>
</div>
Then you need to add some code to process download on form Submit event.
<script>
var pdfUrl = "https://example.com/link-to-your-pdf";
$('#SampleForm').on('submit', function () {
window.open(pdfUrl, '_blank');
});
</script>

You'll have to handle submission with Javascript, instead of the default one.
There is some documentation about sending form submission throught javascript:
https://developer.mozilla.org/en-US/docs/Learn/Forms/Sending_forms_through_JavaScript

checkValidity() not showing any html5 error notifications when fields are empty and posting with Ajax

I have a form that posts using Ajax, I also want to set an HTML5 required attribute on some input fields, but this stops working as expected with Ajax.
So I did the following:
$("body").on("click",".register-button",function(e){
e.preventDefault();
if($('#registerform')[0].checkValidity()){
registerform = $(".register-form").serialize();
$.ajax({
type:'post',
url:"includes/registreren.php",
data:({registerform: registerform}),
success:function(data){
var content = $( $.parseHTML(data) );
$( "#registerresult" ).empty().append( content );
}
});
}else{
}
});
This way the form is not posted when empty, but I also don't get any notifications that fields are empty like I would get when only using HTML to post.
I also tried logging the validity like so:
$("body").on("click",".register-button",function(e){
e.preventDefault();
$check = $('#registerform')[0].checkValidity();
console.log($check);
registerform = $(".register-form").serialize();
$.ajax({
type:'post',
url:"includes/registreren.php",
data:({registerform: registerform}),
success:function(data){
var content = $( $.parseHTML(data) );
$( "#registerresult" ).empty().append( content );
}
});
});
Which shows false in my console when empty. So the code works, why are the HTML5 notifications not shown? I remember doing something similar in the past and I didn't have to add any custom error messages then, it just worked.
This is my HTML markup:
<form id="registerform" class="register-form" method="post">
<div class="row">
<div class="col-md-6">
<input type="text" name="voornaam" placeholder="Voornaam" required>
</div>
<div class="col-md-6">
<input type="text" name="achternaam" placeholder="Achternaam" required>
</div>
<div class="col-md-12">
<input type="text" name="bedrijf" placeholder="Bedrijfsnaam (optioneel)">
</div>
<div class="col-md-6">
<input type="text" name="telefoon" placeholder="Telefoonnummer" required>
</div>
<div class="col-md-6">
<input type="text" name="email" placeholder="E-mail" required>
</div>
<div class="col-md-3">
<input type="text" name="huisnummer" id="billing_streetnumber" placeholder="Huisnummer" required>
</div>
<div class="col-md-3">
<input type="text" name="tussenvoegsel" placeholder="Tussenvoegsel" required>
</div>
<div class="col-md-6">
<input type="text" name="postcode" id="billing_postcode" placeholder="Postcode" required>
</div>
<div id="postcoderesult" class="col-lg-12">
<div class="row">
<div class="col-md-6">
<input type="text" name="straat" placeholder="Straatnaam" readonly required>
</div>
<div class="col-md-6">
<input type="text" name="woonplaats" placeholder="Woonplaats" readonly required>
</div>
</div>
</div>
<div class="col-md-6">
<input type="password" name="password" placeholder="Wachtwoord (minimaal 6 tekens)" required>
</div>
<div class="col-md-6">
<input type="password" name="confirmpassword"placeholder="Herhaal wachtwoord" required>
</div>
<div id="registerresult">
</div>
</div>
<button type="button" name="submit" class="register-button">Account aanmaken</button>
</form>
What am I missing?

Does anyone know how I can make the email form look tidy when it arrives using a formspree.io

I have problem with formspree email response...
I managed to avoid redirecting to them site after click on submitting button.
That looks like this:
var message = "";
$("#sendMessage").on("click", function() {
message = $("#contactform").serialize();
$.ajax({
url: "//formspree.io/example#gmail.com",
method: "POST",
data: {
message: message
},
dataType: "json"
});
alert('Thanks for the email, we\'ll be in touch promptly.');
return true;
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
<form id="contactform" method="POST">
<div class="form-group">
<div class="input-group">
<span class="input-group-addon">Name</span><br>
<input name="NAME" type="text" name="name" class="form-control" required>
</div>
<div class="input-group">
<span class="input-group-addon">Email</span><br>
<input name="EMAIL" type="email" name="_replyto" class="form-control" required>
</div>
<div class="input-group">
<span class="input-group-addon">Subject</span><br>
<input name="SUBJECT" type="text" name="subject" class="form-control" required>
</div>
<div class="input-group">
<span class="input-group-addon">Description</span><br>
<textarea name="DESCRIPTION" name="description" class="form-control" rows="4" cols="60" required></textarea>
</div>
<input type="text" name="_gotcha" style="display:none" />
<button id="sendMessage">Send</button>
</div>
</form>
But when my mail arrives on email....
That looks like this:
NAME=Johan+Doe&EMAIL=johandoe#gmail.com&SUBJECT=Some+topic&DESCRIPTION=there+some+text
Does anyone know how I can make the email form look tidy when it arrives?
Thanks in advance!

Onsubmit not working

I have this form and I tried to make a "onsubmit" that when I click submit it checks if the "email" is = to "cemail" and if username was taken before or not i got this so far
<form class="form-horizontal" action="#" method="post" onsubmit="return ValidationEvent()">
<fieldset>
<legend>SIGN UP! <i class="fa fa-pencil pull-right"></i></legend>
<div class="form-group">
<div class="col-sm-6">
<input type="text" id="firstName" placeholder="First Name" class="form-control" name="firstname" autofocus required>
</div>
<div class="col-sm-6">
<input type="text" id="lastname" placeholder="Last Name" class="form-control" name="lastname" autofocus required>
</div>
</div>
<div class="form-group">
<div class="col-sm-12">
<input type="email" id="email" placeholder="Email" name="email" class="form-control" required>
</div>
</div>
<div class="form-group">
<div class="col-sm-12">
<input type="email" id="cemail" placeholder=" Re-enter Email" name="cemail" class="form-control" required>
</div>
</div>
<div class="form-group">
<div class="col-sm-12">
<input type="text" id="username" placeholder=" Username" name="username" class="form-control" required>
</div>
</div>
<div class="form-group">
<div class="col-sm-12">
<input type="password" id="password" placeholder="Password" name="password" class="form-control" required>
</div>
</div>
<div class="form-group">
<div class="col-sm-12">
<input type="text" id="datepicker" placeholder= "DOB" name="birthday" class="form-control" required>
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-1"></label>
<div class="col-sm-8">
<div class="row">
<label class="radio-inline">
<input type="radio" id="radio" value="Female" name= "gender" required>Female
</label>
<label class="radio-inline">
<input type="radio" id="radio" value="Male" name= "gender">Male
</label>
</div>
</div>
</div> <!-- /.form-group -->
<div class="form-group">
<div class="col-sm-4 col-sm-offset-3">
<button type="submit" class="btn btn-primary btn-block">Register</button>
</div>
</div>
</form>
Javascript code:
<script>
function ValidationEvent() {
var email = document.getElementById("email").value;
var username = document.getElementById("username").value;
var cemail = document.getElementById("cemail").value;
// Conditions
if (email.match != cemail.match) {
alert("Your email doesn't match!");
}
if(mysqli_num_rows($result) != 0)
{
alert("Username already taken!");
}
else {
alert("Thank you");
}
}
</script>
Am I approaching the function in the wrong way is there another easier way and is it okay i put an sql statement in my java script ?

First, don't use inline HTML event handling attributes (like "onsubmit") as they create "spaghetti code", anonymous global event handling wrapper functions and don't conform to the modern W3C DOM Event handling standard.
Second, your .php results have to be gotten from somewhere. You'll need to put a call into that file for its results before you can use them.
Next, you were using the .match() string method incorrectly to compare the emails against each other. All you really need to do is compare the values entered into the email fields (it's also a good idea to call .trim() on form values to strip out any leading or trailing spaces that might have been inadvertently added).
Once you restructure your code to use standards, the JavaScript will change as follows (FYI: This won't work in the Stack Overflow snippet environment because form submissions are blocked, so you can see a working version here):
// When the DOM is loaded:
window.addEventListener("DOMContentLoaded", function(){
// Get references to the DOM elements you will need:
var frm = document.getElementById("frm");
// Don't set variables to the values of DOM elements,
// set them to the DOM elements themselves so you can
// go back and get whatever properties you like without
// having to scan the DOM for them again
var email = document.getElementById("email");
var username = document.getElementById("username");
var cemail = document.getElementById("cemail");
// Set up a submit event handler for the form
frm.addEventListener("submit", validationEvent);
// All DOM event handling funcitons receive an argument
// that references the event they are responding to.
// We need that reference if we want to cancel the event
function validationEvent(evt) {
// Conditions
if (email.value.trim() !== cemail.value.trim()) {
alert("Your email doesn't match!");
// Cancel the form submit event
evt.preventDefault();
evt.stopPropagation();
return;
}
// You need to have already gotten the "mysqli_num_rows($result)" value
// from your .php file and saved it to a variable that you can then check
// here against "!=0"
if(mysqli_num_rows($result) != 0) {
alert("Username already taken!");
// Cancel the form submit event
evt.preventDefault();
evt.stopPropagation();
} else {
alert("Thank you");
}
}
});
<form class="form-horizontal" id="frm" action="#" method="post">
<fieldset>
<legend>SIGN UP! <i class="fa fa-pencil pull-right"></i></legend>
<div class="form-group">
<div class="col-sm-6">
<input type="text" id="firstName" placeholder="First Name" class="form-control" name="firstname" autofocus required>
</div>
<div class="col-sm-6">
<input type="text" id="lastname" placeholder="Last Name" class="form-control" name="lastname" autofocus required>
</div>
</div>
<div class="form-group">
<div class="col-sm-12">
<input type="email" id="email" placeholder="Email" name="email" class="form-control" required>
</div>
</div>
<div class="form-group">
<div class="col-sm-12">
<input type="email" id="cemail" placeholder=" Re-enter Email" name="cemail" class="form-control" required>
</div>
</div>
<div class="form-group">
<div class="col-sm-12">
<input type="text" id="username" placeholder=" Username" name="username" class="form-control" required>
</div>
</div>
<div class="form-group">
<div class="col-sm-12">
<input type="password" id="password" placeholder="Password" name="password" class="form-control" required>
</div>
</div>
<div class="form-group">
<div class="col-sm-12">
<input type="text" id="datepicker" placeholder= "DOB" name="birthday" class="form-control" required>
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-1"></label>
<div class="col-sm-8">
<div class="row">
<label class="radio-inline">
<input type="radio" id="radio" value="Female" name= "gender" required>Female
</label>
<label class="radio-inline">
<input type="radio" id="radio" value="Male" name= "gender">Male
</label>
</div>
</div>
</div> <!-- /.form-group -->
<div class="form-group">
<div class="col-sm-4 col-sm-offset-3">
<button type="submit" class="btn btn-primary btn-block">Register</button>
</div>
</div>
</form>

For checking the emails with email & cemail use
email.localeCompare(cemail)
This will check the string comparison betwwen two emails
And for mysqli_num_rows , is not defined any where in javascript, so we will get the undefined error in console, so need to write a different funnction with that name.

First give a name and an action to your form
<form class="form-horizontal" id="myform" action="chkValues.php" method="post" >
....
<div class="form-group">
<div class="col-sm-12">
<input type="email" id="email" placeholder="Email" name="email" class="form-control" required>
</div>
</div>
<div class="form-group">
<div class="col-sm-12">
<input type="email" id="cemail" placeholder=" Re-enter Email" name="cemail" class="form-control" required>
</div>
</div>
....
</form>
Then put this script at the bottom
<script>
$('#myForm').on("sumbit", function(){
// cancel the original sending
event.preventDefault();
$.ajax({
var form = $(this);
var action = form.attr("action"),
method = form.attr("method"),
data = form.serialize();
})
.done: function(data) // is called wehn the call was okay
{
if( data.substr(0, 5) == "Error"){
alert(data); // sent the sting of the "error message" begining with "Error"
}else{
top.location.href = data; // sent the sting of the "success page" when all was okay and data are saved in the database
}
}
.fail(function() {
alert( "Error: Getting data from Server" );
})
});
</script>
in the php file check the values an return an error if something went wrong.
<?php
if(!isset($_POST['email']) || !isset($_POST['cemail'])){
die("Error: Please fill out both email fields.");
if($_POST['email'] != $_POST['cemail'] ){
die("Error: The Email adresses do not match.");
}
here do what you want to do with the data.
when finish just send the new url
echo "success.html";
}
?>

Two AJAX form submissions in a single JS file, only one is working

In the HTML, the forms look identical, just the form ID is changed. I use this JS file to submit the forms using AJAX:
$("#change-password").submit(function(e) {
var url = "http://domain/actions";
$.ajax({
type: "POST",
url: url,
data: $("#change-password").serialize(),
success: function(data) {
$("div.change-password-response").html(data);
}
});
e.preventDefault();
});
$("#change-email").submit(function(e) {
var url = "http://domain/actions";
$.ajax({
type: "POST",
url: url,
data: $("#change-email").serialize(),
success: function(data) {
$("div.change-email-response").html(data);
}
});
e.preventDefault();
});
HTML Part
<div class="col-md-6 col-sm-6 add_bottom_30">
<h4>Schimbare parola</h4>
<form id="change-password" method="post">
<div class="form-group">
<label>Parola veche</label>
<input class="form-control" name="old_password" id="old_password" type="password" autocomplete="off">
</div>
<div class="form-group">
<label>Parola noua</label>
<input class="form-control" name="new_password" id="new_password" type="password" autocomplete="off">
</div>
<div class="form-group">
<label>Confirma parola noua</label>
<input class="form-control" name="confirm_new_password" id="confirm_new_password" type="password" autocomplete="off">
</div>
<input type="hidden" name="action" value="change-password">
<button type="submit" class="btn_1 green">Actualizeaza parola</button>
<div class="change-password-response form-response"></div>
</form>
</div>
<div class="col-md-6 col-sm-6 add_bottom_30">
<h4>Schimbare adresa email</h4>
<form id="change-email" method="post">
<div class="form-group">
<label>Email vechi</label>
<input class="form-control" name="old_email" id="old_email" type="text" autocomplete="off">
</div>
<div class="form-group">
<label>Email nou</label>
<input class="form-control" name="new_email" id="new_email" type="text" autocomplete="off">
</div>
<div class="form-group">
<label>Confirma email nou</label>
<input class="form-control" name="confirm_new_email" id="confirm_new_email" type="password" autocomplete="off">
</div>
<input type="hidden" name="action" value="change-email">
<button type="submit" class="btn_1 green">Actualizeaza Email</button>
<div class="change-email-response form-response"></div>
</form>
</div>
Now, my problem is that Form 1 is working, Form 2 is not triggering the AJAX and works as normal form. What am I doing wrong?

Check if #change-email has other binded events.
In Firebug, inspect #change-email element and go to Event tab.
In Chrome, inspect that element and go to Event Listeners tab.
You will see all binded events and corresponded callback functions.
If it will not help, try to submit a form manually from Console
Inspect a form, then run
$($0).submit();
If it will work, looks like you have some events on you button.