提交表单而不重新加载页面

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Here is some jQuery for posting to a php page and getting html back:

$('form').submit(function() {
$.post('tip.php', function(html) {
// do what you need in your success callback
}
return false;
});

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The page will get reloaded if you don't want to use javascript

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You either use AJAX or you

create and append an iframe to the document
set the iframes name to 'foo'
set the forms target to 'foo'
submit
have the forms action render javascript with 'parent.notify(...)' to give feedback
optionally you can remove the iframe

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You can try setting the target attribute of your form to a hidden iframe, so the page containing the form won't get reloaded.

I tried it with file uploads (which we know can't be done via AJAX), and it worked beautifully.

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You will need to use JavaScript without resulting to an iframe (ugly approach).

You can do it in JavaScript; using jQuery will make it painless.

I suggest you check out AJAX and Posting.

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最佳答案

You'll need to submit an ajax request to send the email without reloading the page. Take a look at http://api.jquery.com/jQuery.ajax/

Your code should be something along the lines of:

$('#submit').click(function() {
$.ajax({
url: 'send_email.php',
type: 'POST',
data: {
email: 'email@example.com',
message: 'hello world!'
},
success: function(msg) {
alert('Email Sent');
}
});
});

The form will submit in the background to the send_email.php page which will need to handle the request and send the email.

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Have you tried using an iFrame? No ajax, and the original page will not load.

You can display the submit form as a separate page inside the iframe, and when it gets submitted the outer/container page will not reload. This solution will not make use of any kind of ajax.

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this is exactly how it CAN work without jQuery and AJAX and it's working very well using a simple iFrame. I LOVE IT, works in Opera10, FF3 and IE6. Thanks to some of the above posters pointing me the right direction, that's the only reason I am posting here:

<select name="aAddToPage[65654]"
onchange="
if (bCanAddMore) {
addToPage(65654,this);
}
else {
alert('Could not add another, wait until previous is added.');
this.options[0].selected = true;
};
" />
<option value="">Add to page..</option>
[more options with values here]</select>


<script type="text/javascript">
function addToPage(iProduct, oSelect){
iPage = oSelect.options[oSelect.selectedIndex].value;
if (iPage != "") {
bCanAddMore = false;
window.hiddenFrame.document.formFrame.iProduct.value = iProduct;
window.hiddenFrame.document.formFrame.iAddToPage.value = iPage;
window.hiddenFrame.document.formFrame.submit();
}
}
var bCanAddMore = true;</script>


<iframe name="hiddenFrame" style="display:none;" src="frame.php?p=addProductToPage" onload="bCanAddMore = true;"></iframe>

the php code generating the page that is being called above:

if( $_GET['p'] == 'addProductToPage' ){  // hidden form processing
if(!empty($_POST['iAddToPage'])) {
//.. do something with it..
}
print('
<html>
<body>
<form name="formFrame" id="formFrameId" style="display:none;" method="POST" action="frame.php?p=addProductToPage" >
<input type="hidden" name="iProduct" value="" />
<input type="hidden" name="iAddToPage" value="" />
</form>
</body>
</html>
');
}

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Fastest and easiest way is to use an iframe. Put a frame at the bottom of your page.

<iframe name="frame"></iframe>

And in your form do this.

<form target="frame">
</form>

and to make the frame invisible in your css.

iframe{
display: none;
}

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It's a must to take help of jquery-ajax in this case. Without ajax, there is currently no solution.

First, call a JavaScript function when the form is submitted. Just set onsubmit="func()". Even if the function is called, the default action of the submission would be performed. If it is performed there would be no way of stoping the page from refreshing or redirecting. So, next task is to prevent the default action. Insert the following line at the start of func().

event.preventDefault()

Now, there will be no redirecting or refreshing. So, you simply make an ajax call from func() and do whatever you want to do when call ends.

Example:

Form:

<form id="form-id" onsubmit="func()">
<input id="input-id" type="text">
</form>

Javascript:

function func(){
event.preventDefault();
var newValue = $('#input-field-id').val();
$.ajax({
type: 'POST',
url: '...',
data: {...},
datatype: 'JSON',
success: function(data){...},
error: function(){...},
});
}

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I've found what I think is an easier way. If you put an Iframe in the page, you can redirect the exit of the action there and make it show up. You can do nothing, of course. In that case, you can set the iframe display to none.

<iframe name="votar" style="display:none;"></iframe>
<form action="tip.php" method="post" target="votar">
<input type="submit" value="Skicka Tips">
<input type="hidden" name="ad_id" value="2">
</form>

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function Foo(){
event.preventDefault();
$.ajax(   {
url:"<?php echo base_url();?>Controllername/ctlr_function",
type:"POST",
data:'email='+$("#email").val(),
success:function(msg)      {
alert('You are subscribed');
}
}   );
}

I tried many times for a good solution and answer by @taufique helped me to arrive at this answer.

NB : Don't forget to put event.preventDefault(); at the beginning of the body of the function .

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This should solve your problem.
In this code after submit button click we call jquery ajax and we pass url to post
type POST/GET
data: data information you can select input fields or any other.
sucess: callback if everything is ok from server
function parameter text, html or json, response from server
in sucess you can write write warnings if data you got is in some kind of state and so on. or execute your code what to do next.

<form id='tip'>
Tip somebody: <input name="tip_email" id="tip_email" type="text" size="30" onfocus="tip_div(1);" onblur="tip_div(2);"/>
<input type="submit" id="submit" value="Skicka Tips"/>
<input type="hidden" id="ad_id" name="ad_id" />
</form>
<script>
$( "#tip" ).submit(function( e ) {
e.preventDefault();
$.ajax({
url: tip.php,
type:'POST',
data:
{
tip_email: $('#tip_email').val(),
ad_id: $('#ad_id').val()
},
success: function(msg)
{


alert('Email Sent');
}
});
});
</script>

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if you're submitting to the same page where the form is you could write the form tags with out an action and it will submit, like this

<form method='post'> <!-- you can see there is no action here-->

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I did something similar to the jquery above, but I needed to reset my form data and graphic attachment canvases. So here is what I came up with:

    <script>
$(document).ready(function(){


$("#text_only_radio_button_id").click(function(){
$("#single_pic_div").hide();
$("#multi_pic_div").hide();
});


$("#pic_radio_button_id").click(function(){
$("#single_pic_div").show();
$("#multi_pic_div").hide();
});


$("#gallery_radio_button_id").click(function(){
$("#single_pic_div").hide();
$("#multi_pic_div").show();
});
$("#my_Submit_button_ID").click(function() {
$("#single_pic_div").hide();
$("#multi_pic_div").hide();
var url = "script_the_form_gets_posted_to.php";


$.ajax({
type: "POST",
url: url,
data: $("#html_form_id").serialize(),
success: function(){
document.getElementById("html_form_id").reset();
var canvas=document.getElementById("canvas");
var canvasA=document.getElementById("canvasA");
var canvasB=document.getElementById("canvasB");
var canvasC=document.getElementById("canvasC");
var canvasD=document.getElementById("canvasD");


var ctx=canvas.getContext("2d");
var ctxA=canvasA.getContext("2d");
var ctxB=canvasB.getContext("2d");
var ctxC=canvasC.getContext("2d");
var ctxD=canvasD.getContext("2d");
ctx.clearRect(0, 0,480,480);
ctxA.clearRect(0, 0,480,480);
ctxB.clearRect(0, 0,480,480);
ctxC.clearRect(0, 0,480,480);
ctxD.clearRect(0, 0,480,480);
} });
return false;
});    });
</script>

That works well for me, for your application of just an html form, we can simplify this jquery code like this:

       <script>
$(document).ready(function(){


$("#my_Submit_button_ID").click(function() {
var url =  "script_the_form_gets_posted_to.php";
$.ajax({
type: "POST",
url: url,
data: $("#html_form_id").serialize(),
success: function(){
document.getElementById("html_form_id").reset();
} });
return false;
});    });
</script>

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SUBMITTING THE FORM WITHOUT RELOADING THE PAGE AND GET THE RESULT OF SUBMITTED DATA ON THE SAME PAGE.

Here's some of the code I found on the internet that solves this problem :

1.) IFRAME

When the form is submitted, The action will be executed and target the specific iframe to reload.

index.php

<iframe name="content" style="">
</iframe>
<form action="iframe_content.php" method="post" target="content">
<input type="text" name="Name" value="">
<input type="submit" name="Submit" value="Submit">
</form>

iframe_content.php

<?php
$Submit = isset($_POST['Submit']) ? $_POST['Submit'] : false;
$Name = isset($_POST['Name']) ? $_POST['Name'] : '';
if($Submit){
echo $Name;
}
?>

2.) AJAX

Index.php:

<form >
<input type="" name="name" id="name">
<input type="" name="descr" id="descr">
<input type="submit" name="" value="submit" onclick="return clickButton();">
</form>
<p id="msg"></p>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script type="text/javascript">
function clickButton(){
var name=document.getElementById('name').value;
var descr=document.getElementById('descr').value;
$.ajax({
type:"post",
url:"server_action.php",
data:
{
'name' :name,
'descr' :descr
},
cache:false,
success: function (html)
{
alert('Data Send');
$('#msg').html(html);
}
});
return false;
}
</script>

server_action.php

<?php
$name = isset($_POST['name']) ? $_POST['name'] : '';
$descr = isset($_POST['descr']) ? $_POST['descr'] : '';




echo $name;
echo $descr;


?>

Tags: php ajax jquery serverside html

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A further possibility is to make a direct javascript link to your function:

<form action="javascript:your_function();" method="post">

...

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I don't know JavaScript and I just started to learn PHP, so what helped for me from all those responses was:

Create inedx.php and insert:

<iframe name="email" style=""></iframe>
<form action="email.php" method="post" target="email">
<input type="email" name="email" >
<input type="submit" name="Submit" value="Submit">
</form>

Create email.php and insert this code to check if you are getting the data (you should see it on index.php in the iframe):

    <?php
if (isset($_POST['Submit'])){
$email = $_POST['email'];
echo $email;
}
?>

If everything is ok, change the code on email.php to:

    <?php
if (isset($_POST['Submit'])){
$to = $_POST['email'];
$subject = "Test email";
$message = "Test message";
$headers = "From: test@test.com \r\n";
$headers .= "Reply-To: test@test.com \r\n";
$headers .= "MIME-Version: 1.0\r\n";
$headers .= "Content-Type: text/html; charset=ISO-8859-1\r\n";
    

mail($to, $subject, $message, $headers);
}
?>

Hope this helps for all other rookies like me :)

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Modern Answer without XHR or jQuery

It's 2022, we don't need to use old tools like XHR or jQuery when we have the Fetch API and the FormData API!

The first thing we need to do is prevent the default form submission behavior from occurring with event.preventDefault():

form.addEventListener("submit", function(event){
event.preventDefault();
// ...
});

Now we need to replace the submission behavior with our own AJAX request. The Fetch API makes it pretty simple to post form data - just create a new FormData object, populating it with the form's values, and use it as the body of a fetch request:

fetch(form.action, {
method: "post",
body: new URLSearchParams(new FormData(form))
});

Note that this submits an HTTP request using the multipart/form-data format. If you need to post the data using application/x-www-form-urlencoded, create a new URLSearchParams object from the FormData object and use that as the fetch's body.

fetch(form.action, {
method: "post",
body: new URLSearchParams(new FormData(form))
});

Here's a full code example:

let form = document.querySelector("form");


form.addEventListener("submit", function(event){
event.preventDefault();
  

fetch(form.action, {
method: "post",
body: //new FormData(form) // for multipart/form-data
new URLSearchParams(new FormData(form)) //for application/x-www-form-urlencoded
});
});

<form method="POST">
<input name="name" placeholder="Name" />
<input name="phone" type="tel" placeholder="Phone" />
<input name="email" type="email" placeholder="Email" />
<input name="submit" type="submit" />
</form>