Wednesday, April 7, 2021

Find all IDs in a class : JQuery


var idArray = [];

$('.red').each(function () {

jQuery: sending JSON data to PHP with AJAX

 Passing JSON data with jQuery and AJAX to Node.js is relatively simple, passing JSON data with jQuery and AJAX to PHP requires a few extra steps.

Instead of trying to send JSON as is, you should only send a well-formed JSON string and let PHP to transform it into an object or an associative array (depending on how you use the json_decode() function).

Bear in mind that PHP not only requires the string to be valid JSON: your string must also be UTF-8 compliant. So with jQuery we can write:

var data = {

  test: $( "#test" ).val()


var options = {

  url: "test.php",

  dataType: "text",

  type: "POST",

  data: { test: JSON.stringify( data ) }, // Our valid JSON string

  success: function( data, status, xhr ) {



  error: function( xhr, status, error ) {




$.ajax( options );

And with PHP we have to take care of the string encoding before using it:


  header('Content-Type: text/plain');

  $test = utf8_encode($_POST['test']); // Don't forget the encoding

  $data = json_decode($test);

  echo $data->test;



Reff :