I can't get PHP to read text sent via Ajax.
index.html
<head>
<!--CSS Bootstrap-->
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin=" anonymous">
<!-- JS -->
<script src="https://code.jquery.com/jquery-3.6.0.js"
integrity="sha256-H+K7U5CnXl1h5ywQfKtSj8PCmoN9aaq30gDh27Xc0jk=" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@4.0.0/dist/js/bootstrap.min.js"
integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl"
crossorigin="anonymous"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css"
integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
</head>
<!-- Button to trigger modal -->
<button type="button" class="btn btn-primary" id="btnOpen">
Open demo modal
</button>
<!-- Modal -->
<div class="modal fade" id="modalExample" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel"
aria-hidden="true">
<?php include "modal.php"; ?>
</div>
<script>
// call the image modal
$("#btnOpen").click(function () {
//send the string to the php page
$.ajax({
type: 'POST',
url: '//localhost/slider/modal.php',
data: 'Test shipping',
}).done(function () {
alert('data sent');
});
// call the modal window
$("#modalExample").modal("show");
});
</script>
modal.php
<div style="text-align: center">
<?php echo $_POST['data']; ?>
</div>
<div id="carouselExampleIndicators" class="carousel slide"
data-ride="carousel">
<ol class="carousel-indicators">
<li data-target="#carouselExampleIndicators" data-slide-to="0"
class="active"></li>
<li data-target="#carouselExampleIndicators" data-slide-to="1"></li>
<li data-target="#carouselExampleIndicators" data-slide-to="2"></li>
</ol>
<div class="carousel-inner">
<div class="carousel-item active">
<img class="d-block w-100" src="img.png" alt="First slide">
</div>
<div class="carousel-item">
<img class="d-block w-100" src="img2.png" alt="Second slide">
</div>
<div class="carousel-item">
<img class="d-block w-100" src="img3.png" alt="Third slide">
</div>
</div>
<a class="carousel-control-prev" href="#carouselExampleIndicators"
role="button" data-slide="prev">
<span class="carousel-control-prev-icon" aria-hidden="true"></span>
<span class="sr-only">Previous</span>
</a>
<a class="carousel-control-next" href="#carouselExampleIndicators"
role="button" data-slide="next">
<span class="carousel-control-next-icon" aria-hidden="true"></span>
<span class="sr-only">Next</span>
</a>
</div>
When I click the button, I get the message Sending data from Ajax, the slider shows no error, but the text in the div where PHP is supposed to read the Post shows the error:
Note: Undefined index: data in...
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
You need to send the data as an object. like this:
$.ajax({ type: 'POST', url: '//localhost/slider/modal.php', data: {data: 'Test shipping'}, }).done(function() { alert('data sent'); });