Develop Reference

How to prevent browser from opening a new page on form submit?

There's an email subscription form in a web page, When someone enters his email and clicks on submit button, We don't want this page to be redirected to form action url, We just want it's submit button text value to be converted to another text, something like "Thank You!". How is it possible? Should I go through ajax? or javascript?
Here's the form:
<form class="ml-block-form" action="//app.mailerlite.com/webforms/submit/myownID" data-code="myownID" method="POST" target="_blank">
<div class="form-group ml-field-email ml-validate-required ml-validate-email">
<input class="newsletter-email" type="email" name="fields[email]" placeholder="Email*"/>
</div>
<input type="hidden" name="ml-submit" value="1" />
<p>
<input class="newsletter-submit" type="submit" value="Get Updates!"/>
</p>

For starters remove target="_blank" from your form tag.
Then, within your jQuery, do something along the lines of this:
$(".ml-block-form").submit(function(){
var vals = $(this).serialize();
$.ajax({
url: "postpage.php",
method: "POST",
data: vals,
success: function(data) {
$("#formsubmit").val("Thank you!");
}
});
return false; // prevent from submit
});
I've altered your HTML as well, as it was originally very messy. You can of course add the other elements back if you need:
<form class="ml-block-form" action="" data-code="myownID" method="post">
<input id="mainval" type="email" name="fields[email]" placeholder="Email*">
<input id="hiddenval" name="ml-submit" value="1" />
<input id="formsubmit" type="submit" value="Get Updates!"/>
</form>

You can simply remove target="blank" because blank value opens the linked document in a new window.

Instead of
<input class="newsletter-submit" type="submit" value="Get Updates!"/>
use
<button id="newsletter-submit" value="Get Updates!"/>
(note that I changed class for id)
And then use jQuery to handle the click on the button:
$("#newsletter-submit").click(function () {
$(this).prop("value", "Thank You!");
// do something else with the input values e.g. send them via ajax to a server script
});

Form with two submit buttons doing two different things

I have a form that I have two buttons on. One button should take the user to one php script and the other button would take the user two a different php script. However for some reason the buttons aren't doing anything. Here is the code.
<script language="Javascript">
function OnButton1()
{
document.contactform.action = "../scripts/email-info.php"
// document.Form1.target = "_blank"; // Open in a new window
document.contactform.submit(); // Submit the page
return true;
}
function OnButton2()
{
document.contactform.action = "../scripts/email-info2.php"
//document.contactform.target = "_blank"; // Open in a new window
document.contactform.submit(); // Submit the page
return true;
}
</script
Then here is the actual form code:
<form id="contact-form" name="contactform" method="post">
<fieldset>
<div id="holder">
<div id="formLeft">
<div class="txtlabel">Name* </div><div class="input-bg"><input type="text"
name="name" id="name" required></div>
</div>
</div>
<div id="msgbox">
<div class="txtlabel">Tell Us About Your Business Needs</div>
<div class="message-bg">
<textarea name="message" id="message" rows="9" cols="56" required></textarea><input
name="formpage" type="hidden" value="<?=$pagename;?>" />
</div></div><div style="clear:both"></div><br /><br />
<input src="/submitbtn.jpg"
name="submit" value="View Now" class="submit-button" onclick="OnButton1();"/>
<input src="/submitbtn.jpg"
name="submit" value="Download Now" class="submit-button2" onclick="OnButton2();" />
</fieldset>
</form>
I've removed some of the submission fields to make it more easily viewable. But I get nothing when I click either button...Any thoughts??

problem is in input:
<input src="/submitbtn.jpg"
name="submit" value="View Now" class="submit-button" onclick="OnButton1();"/>
When you have a form:
document.contactform.submit
Javascript returns the input with name submit, not the submit function.
You could change the name of the input:
<input src="/submitbtn.jpg"
name="yourName" value="View Now" class="submit-button" onclick="OnButton1();"/>
Also, your inputs are not buttons, check this.
Update
This question mentions HTML5 formaction attribute:
<form action=#">
<buton formaction="script-1.php">submit one</button>
<buton formaction="script-2.php">submit two</button>
</form>

I'm surprised no one mentioned formaction. It is a legal attribute (in HTML5) for the input and button tag in submit/image state and can be used to send form data to a different action page. http://mdn.beonex.com/en/HTML/Element/input.html (it is also valid in button too).
<form action=#">
<buton formaction="script-1.php">submit one</button>
<buton formaction="script-2.php">submit two</button>
</form>
In case you need to support IE9-, you simply can polyfill this, using webshims.
<script src="webshims/polyfiller.js"></script>
<script>
webshims.polyfill('forms');
</script>
<!-- now it also works with IE8/9 and other legacy browsers -->
<form action=#">
<buton formaction="script-1.php">submit one</button>
<buton formaction="script-2.php">submit two</button>
</form>

The reference to your form is
document.forms.contactform
and not
document.contactform
So, for example, the submit button should be:
document.forms.contactform.submit();
// ^^^^^
The same correction should be applied to other references.

How to submit one html form to difference actions

I have small form and links created like this
Contact | Message
<form name="selectform" action="save.php" method="post" target="_blank">
Name: <input type="text" name="test"/>
<input type="submit" value="Submit" name="sub"/>
</form>
When I click "Contact" link, form submit correctly, And If I click "Message" link how to set this form submit to another url
for an example: if i click "Message" link, I want to submit form to edit.php and without using traget="_blank"

You can change the form action using attr() method of jquery,
For example
$('#link1').click(function(){
$('#formId').attr('action', 'page1').submit();
});
$('#link2').click(function(){
$('#formId').attr('action', 'page2').submit();
});

Here you go...
Contact | Message
<form name="selectform" action="save.php" methode="post" target="_blank">
Name: <input type="text" name="test"/>
<input type="submit" value="Submit" name="sub"/>
</form>

Try it like,
Change in HTML
Message
SCRIPT
$('#msgSubmit').on('click',function(e){
e.preventDefault();
$('form[name="selectform"]').attr('action','edit.php')
.removeAttr('target')
.submit();
});

You can use onclick event
<script>
function submitForm(action)
{
document.getElementById('form1').action = action;
document.getElementById('form1').submit();
}
</script>
...
Contact
<a href="#" onclick="submitForm('page2.php')" value="submit 2" >Message</a>

I have done some modification in your code.
please check and let me know.
Contact | Message
<form id="selectform_id" name="selectform" action="" method="post" target="_blank">
Name: <input type="text" name="test"/>
<input type="submit" value="Submit" name="sub"/>
</form>
<script type="text/javascript">
function myaction(actn){
document.getElementById("selectform_id").action = actn;
document.selectform.submit();
}
</script>

onclick not firing for submit input when attached using jquery

html:
<input id="save "type="submit" value="Create" class="btn btn-primary"/>
javascript that register onclick (IsValid is a function that validates before submiting, returns true of false)
$('#save').click(function () {
return IsValid();
});
Note that this exact same code works if I write:
<input id="save "type="submit" value="Create" class="btn btn-primary" onclick='javascript: IsValid();'/>
This is another option without modifying the markup (createForm is the form)
$('#createForm').submit(function () {
return IsValid();
});
Why $('').click is not registering my event handler?
Form looks like this:
<form method="post" id="createForm" class="well" action="/ScheduleWorkDay/Create" novalidate="novalidate">

It maybe that your id has a space or you have not used document.ready()
here is the working demo
<input id="save" type="submit" value="Create" class="btn btn-primary"/>
$(document).ready(function(){
$('#save').click(function () {
alert("invalid");
});
});
Demo

MrOBrian was right. The problem was that
<input id="save "
had an extra space in the id name. Thanks!

Your event handler isn't registering because there are no handlers on the form with the id save, but there is a save (with a space). Remove the space.
<input id="save" type="submit" value="Create" class="btn btn-primary"/>
$('#save').click(function () {
return IsValid();
});
should work without issues.
A jsFiddle showing it working

Twitter Bootstrap 2 modal form dialogs

I have the following dialog form :
<div class='modal' id='myModal'>
<div class='modal-header'>
<a class='close' data-dismiss='modal'>×</a>
<h3>Add Tags</h3>
</div>
<div class='modal-body'>
<form accept-charset="UTF-8" action="/tagging" data-remote="true" method="post"><div style="margin:0;padding:0;display:inline"><input name="utf8" type="hidden" value="✓" /><input name="authenticity_token" type="hidden" value="mCNvbvoPFWhD7SoJm9FPDh+BcRvCG3d16P+oOFACPuc=" /></div>
<input id="tags_string" name="tags_string" type="text" value="luca" />
<input id="id" name="id" type="hidden" value="4f1c95fd1d41c80ff200067f" />
</form>
</div>
<div class='modal-footer'>
<div class='btn btn-primary'><input name="commit" type="submit" value="Add tag" /></div>
</div>
</div>
and his JS :
<script>
//<![CDATA[
$(function() {
// wire up the buttons to dismiss the modal when shown
$("#myModal").bind("show", function() {
$("#myModal a.btn").click(function(e) {
// do something based on which button was clicked
// we just log the contents of the link element for demo purposes
console.log("button pressed: "+$(this).html());
// hide the dialog box
$("#myModal").modal('hide');
});
});
// remove the event listeners when the dialog is hidden
$("#myModal").bind("hide", function() {
// remove event listeners on the buttons
$("#myModal a.btn").unbind();
});
// finally, wire up the actual modal functionality and show the dialog
$("#myModal").modal({
"backdrop" : "static",
"keyboard" : true,
"show" : true // this parameter ensures the modal is shown immediately
});
});
//]]>
</script>
When I click x, which is <a class='close' data-dismiss='modal'>×</a>, the form close down leaving me on the current page, while I'd like to go on the hamepage.
Also "Add tag" botton, which is <div class='btn btn-primary'><input name="commit" type="submit" value="Add tag" /></div> don't do nothing, while clicking jaust ENTER on the keyboard do the job and I'd like clicking "Add tag" did the same.
I'm not so skilled on JS and front-end prog, so any help is welcome.

Your submit button is outside of the form tags.
It won't know what form to submit.
Use javascript to connect it to the form.
<div class='modal-body'>
<form id="modal-form" accept-charset="UTF-8" action="/tagging" data-remote="true" method="post">
<input name="something" value="Some value" />
</form>
</div>
<div class='modal-footer'>
<a id="modal-form-submit" class='btn btn-primary' href="#">Submit</a>
</div>
<script>
$('#modal-form-submit').on('click', function(e){
// We don't want this to act as a link so cancel the link action
e.preventDefault();
// Find form and submit it
$('#modal-form').submit();
});
</script>
As for the <a class='close' data-dismiss='modal'>×</a> that is supposed to link to the homepage, why not just remove the data-dismiss='modal' and make it act like a normal link using a standard href='home.html'.
Here is some additional code to point you in the right direction for using AJAX to submit the form:
// Since we want both pressing 'Enter' and clicking the button to work
// We'll subscribe to the submit event, which is triggered by both
$('#modal-form').on('submit', function(){
//Serialize the form and post it to the server
$.post("/yourReceivingPage", $(this).serialize(), function(){
// When this executes, we know the form was submitted
// To give some time for the animation,
// let's add a delay of 200 ms before the redirect
var delay = 200;
setTimeout(function(){
window.location.href = 'successUrl.html';
}, delay);
// Hide the modal
$("#my-modal").modal('hide');
});
// Stop the normal form submission
return false;
});

To get the submit button work put it inside the form.
<div class="modal">
<form id="modal-form" action="/tagging" data-remote="true" method="post">
<div class="modal-header">
<a class="close" data-dismiss="modal">×</a>
<h3>A Modal Form</h3>
</div>
<div class="modal-body">
<input name="something" value="Some value" />
</div>
<div class="modal-footer">
Cancel
<input type="submit" value="Save" class="btn btn-primary" />
</div>
</form>
</div>
However, this adds an unexpected margin at the bottom of the modal. Bootstrap 2.0.2 introduced the modal-form class to fix this or you can fix it yourself with a style definition like:
.modal > form {
margin-bottom: 0;
}
For linking to another page when closing the modal I go along with TheShellfishMeme
As for the × that is supposed to link to the homepage, why not just remove the data-dismiss='modal' and make it act like a normal link using a standard href='home.html'.

With HTML5 you can have something like this:
<div class="modal" id="myModal">
<div class="modal-header">
<a class="close" data-dismiss="modal">×</a>
<h3>Add Tags</h3>
</div>
<div class="modal-body">
<form id="my_form" accept-charset="UTF-8" action="/tagging" data-remote="true" method="post">
<div style="margin:0;padding:0;display:inline">
<input name="utf8" type="hidden" value="✓" />
<input name="authenticity_token" type="hidden" value="mCNvbvoPFWhD7SoJm9FPDh+BcRvCG3d16P+oOFACPuc=" />
</div>
<input id="tags_string" name="tags_string" type="text" value="luca" />
<input id="id" name="id" type="hidden" value="4f1c95fd1d41c80ff200067f" />
</form>
</div>
<div class="modal-footer">
<div class="btn btn-primary"><input name="commit" type="submit" value="Add tag" form="my_form" /></div>
</div>
</div>
This called in HTML5 form-associated element of-course if you need to support all browsers + old ones then you need to go with JavaScript, but you can use JavaScript as a fallback :)

The problem for submitting form lies within bootstrap own JS modal library (bootstrap-modal.js) - basicaly submit event is being prevented due to line #204: ev.preventDefault (why?).
My solution was to add:
if(!$(e.target).parents('form'))
e.preventDefault();
however I don't know what problems it will spawn.

FYI You can do the following (written in jade):
.modal.hide.fadel
form.modal-form
.modal-header
button.close type='button' data-dismiss="modal" x
h3= t 'translation'
.modal-body
p hello
.modal-footer
button.btn data-dismiss="modal" href="#" = t 'close'
a.btn.btn-primary data-dismiss="modal" data-remote="true" href="#"= t 'form.submit'