Develop Reference

Span value using Ajax

Hello i try to display a price form an AJAX call, i putted an input just to check if you get the price and it's work but i can't display the price result on a span.
{{$product->price}} have default value but it's change depending the size, i would like to display the result also in the space and hide the input.
someone knows how to do that ?
Here my html :
<input type="text" placeholder="{{$product->price}}"value="{{$product->price}}">
<div id="price">
<span class="text-muted text-normal" id="price"> {{$product->price}}€</span>
</div>
<input type="hidden" name="price" id="price" value="{{$product->price}}" />
Here my javascript :
<script>
$('#size').change(function () {
$.ajax({
type: 'GET',
url : '../{{$product->id}}/ballons-entrainement/size-price',
dataType: "json",
data : {
size : document.getElementById('size').value
},
success:function(data){
console.log(data);
$('input').attr('value', data.price);
}
});
});
</script>

You try with .html() like
<script>
$('#size').change(function () {
$.ajax({
type: 'GET',
url : '../{{$product->id}}/ballons-entrainement/size-price',
dataType: "json",
data : {
size : document.getElementById('size').value
},
success:function(data){
$('span#price').html( data.price );
}
});
});
</script>

use Ajax to call function while using another ajax with preventDefault to submit

I am making two AJAX calls in the form. The first is to change the second select based on the first select which calling a PHP page to process the data. The second is to prevent the default post and post the data in another PHP page.
Both Functions are working if I delete the other one. I also have another problem which is the redirect to a new page (using CleanURL). Where should I redirect in the posting page, or once return to the form page?
$('#brand').change(function() {
var brandID2 = $(this).val();
$.ajax({
url: "Calling the models after selecting the brand",
method: "POST",
data: {
brandID: brandID2
},
dataType: "text",
success: function(data) {
$('#model').html(data);
}
});
});
$("#testform").on('submit', (function(e) {
e.preventDefault();
$.ajax({
url: "Calling the post page",
type: "POST",
data: new FormData(this),
contentType: false,
cache: false,
processData: false,
success: function(data) {
//window.location.href = "<?php echo $_SESSION['toRedirectToAfterFilters']; ?>";
}
});
}));
<form name="testform" action="" method="POST">
<select name="brand" id="brand">
<option value=''>Select a Brand</option>
//function to load all the brands
</select>
<select name="model" id="model">
<option value="">Please Select Brand First</option>
</select>
<button type="submit" name="submit" class="">FILTER</button>
</form>

You are missing the id on testform
<form id="testform">...
I would remove the CleanURL dependency and try out each AJAX request one at a time. Then you will immediately see the point of failure. If not, throw a debugger; inside each event handler and step through.
Personally, I would redirect from the server after a successful database write, to simplify the logic and not have to store the success callback URL inside the $_SESSION array.

Sending data to php file AJAX

So I have a target. It's to have a live area where you type in a username and every time you let a key go onkeyup() in the input area, I want it to send that data to a php file where that file will return what you just typed in and display it out where I want it. This isn't going as I like though :P. Please help, and thanks in advance.
JavaScript/jQuery/Ajax Code
function changeUsername() {
var user = $("#user").val();
$.ajax({
type: "GET",
url: "php/return.php",
data: user,
cache: false,
success: function(data){
$("#username-display").text(data);
}
});
}
HTML Code
<div class="container" title="Press enter to submit">
<label>What is your name: </label><input type="text" name="user" required="" maxlength="200" id="user" onkeyup="changeUsername();" /> <br />
You typed: <strong id="username-display"></strong>
<strong id="msg"></strong>
</div>
PHP Code
<?php
$username_vuln = $_GET["user"];
$username = htmlspecialchars($username_vuln);
echo $username;
?>
Please let me know if you need more info to help me solve this...

hey you can use following code
HTML CODE
<script type="text/javascript">
function changeUsername() {
// var user = $("#user").val();
$.ajax({
type: "GET",
url: "s.php",
data: {'user':$("#user").val()},
success: function(data){
$("#username-display").text(data);
}
});
}
</script>
<div class="container" title="Press enter to submit">
<label>What is your name: </label><input type="text" name="user" required="" maxlength="200" id="user" onkeyup="changeUsername();" /> <br />
You typed: <strong id="username-display"></strong>
<strong id="msg"></strong>
</div>
PHP CODE
<?php
$username_vuln = $_GET["user"];
$username = htmlspecialchars($username_vuln);
echo $_GET["user"];
?>

You need to correct your AJAX code also change type from GET to POST in php code so, final code will be like -
function changeUsername() {
var user = $("#user").val();
$.ajax({
url: "data.php",
data: {'user': user},
type : 'post',
success: function (data) {
$("#username-display").text(data);
}
});
}
PHP CODE :-
$username_vuln = $_POST["user"];
$username = htmlspecialchars($username_vuln);
echo json_encode($username);

Change Get to Post.
function changeUsername() {
var user = $("#user").val();
$.ajax({
type: "POST",
url: "php/return.php",
data: {'user': user},
cache: false,
success: function(data){
alert(data);
$("#username-display").text(data);
}
});
}
Php code first try to get response.
$username_vuln = $_POST["user"];
$username = htmlspecialchars($username_vuln);
echo $username; exit;

Try:
echo( json_encode( $username ) );
exit( 1 );

How to replace or update existing content in textarea by using http.post method?

I plan to POST my text content to http://language.cs.usm.my/synthesis/read.php form's textarea which is third party web page, below is the form that i get from the URL.
<form method="post" action="">
<p>Key in sentences in Malay. </p>
<textarea name="malayText" rows="4" cols="100">Malaysia ialah sebuah negara raja berperlembagaan persekutuan di Asia Tenggara yang terdiri daripada 13 negeri dan tiga wilayah persekutuan. Ia menduduki bumi berkeluasan 329,847 kilometer persegi.</textarea>
<input type="submit" value="OK" name="submit" />
</form>
The method i use to post data as below:
$scope.AudioCont = function(){
var req = $http({
method: 'POST',
url: 'http://language.cs.usm.my/synthesis/read.php',
data:{
test:"Nama saya ialah Ali"
}
})
.then(
function (response) {
alert("The data has been posted");
console.log(response);
},
function () {
alert("Failed to post!");
})
}
How can i replace the content in the existing textarea with my data?
Thanks

you have to add ng-model on the input or textarea
<form method="post" action="">
<p>Key in sentences in Malay. </p>
<textarea name="malayText" rows="4" cols="100" ng-model="yourtextarea"></textarea>
<input type="submit" value="OK" name="submit" />
</form>
and in the controller get him with $scope.yourVarName
$scope.yourtextarea ;
$scope.AudioCont = function(){
var req = $http({
method: 'POST',
url: 'http://language.cs.usm.my/synthesis/read.php',
data:{
test:$scope.yourtextarea
}
})
.then(
function (response) {
alert("The data has been posted");
console.log(response);
},
function () {
alert("Failed to post!");
})
}

You need to use ng-model
<textarea name="malayText" rows="4" cols="100" ng-model="malayText">
and then you can readily access it in your controller
var req = $http({
method: 'POST',
url: 'http://language.cs.usm.my/synthesis/read.php',
data:{
test: $scope.malayText
}

I used ajax method to solve this problem with auto submit the form when i perform the POST action. Below is my code and solution:
$.ajax({
type: 'POST',
url: 'your url',
data: {'submit': 'submit', 'malayText' : "data that wish to POST"}, // you can use as much as data you want to send,
dataType: 'JSON' // so you can use the json_encode php function
});

Send form data with jquery ajax json

I'm new in PHP/jquery
I would like to ask how to send json data from a form field like (name, age, etc) with ajax in a json format. Sadly I can't found any relevant information about this it's even possible to do it dynamically? Google searches only gives back answers like build up the data manually. like: name: X Y, age: 32, and so on.
Is there anyway to do that?
Thanks for the help!
Edit:
<form action="test.php" method="post">
Name: <input type="text" name="name"><br>
Age: <input type="text" name="email"><br>
FavColor: <input type="text" name="favc"><br>
<input type="submit">
</form>

here is a simple one
here is my test.php for testing only
<?php
// this is just a test
//send back to the ajax request the request
echo json_encode($_POST);
here is my index.html
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<form id="form" action="" method="post">
Name: <input type="text" name="name"><br>
Age: <input type="text" name="email"><br>
FavColor: <input type="text" name="favc"><br>
<input id="submit" type="button" name="submit" value="submit">
</form>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script>
$(document).ready(function(){
// click on button submit
$("#submit").on('click', function(){
// send ajax
$.ajax({
url: 'test.php', // url where to submit the request
type : "POST", // type of action POST || GET
dataType : 'json', // data type
data : $("#form").serialize(), // post data || get data
success : function(result) {
// you can see the result from the console
// tab of the developer tools
console.log(result);
},
error: function(xhr, resp, text) {
console.log(xhr, resp, text);
}
})
});
});
</script>
</body>
</html>
Both file are place in the same directory

The accepted answer here indeed makes a json from a form, but the json contents is really a string with url-encoded contents.
To make a more realistic json POST, use some solution from Serialize form data to JSON to make formToJson function and add contentType: 'application/json;charset=UTF-8' to the jQuery ajax call parameters.
$.ajax({
url: 'test.php',
type: "POST",
dataType: 'json',
data: formToJson($("form")),
contentType: 'application/json;charset=UTF-8',
...
})

You can use serialize() like this:
$.ajax({
cache: false,
url: 'test.php',
data: $('form').serialize(),
datatype: 'json',
success: function(data) {
}
});

Why use JQuery?
Javascript provides FormData api and fetch to perform this easily.
var form = document.querySelector('form');
form.onsubmit = function(event){
var formData = new FormData(form);
fetch("/test.php",
{
body: formData,
method: "post"
}).then(…);
//Dont submit the form.
return false;
}
Reference:
https://metamug.com/article/html5/ajax-form-submit.html#submit-form-with-fetch

Sending data from formfields back to the server (php) is usualy done by the POST method which can be found back in the superglobal array $_POST inside PHP. There is no need to transform it to JSON before you send it to the server. Little example:
<?php
if($_SERVER['REQUEST_METHOD'] == 'POST')
{
echo '<pre>';
print_r($_POST);
}
?>
<form action="" method="post">
<input type="text" name="email" value="joe#gmail.com" />
<button type="submit">Send!</button>
With AJAX you are able to do exactly the same thing, only without page refresh.