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Editorial Team
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Asked: 2026-06-13T13:24:42+00:00

How to pass a variable from js file to php file.i want variable from

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How to pass a variable from js file to php file.i want variable from checker.js
to test.php 

function SendData(id){
    $.ajax({
        type: "POST",
        url: "test.php",
        data: "id=" + id,
        cashe: false,
        success: function(response){
            alert("Record successfully updated")
        }
    })
}
$(document).ready(function(){
    SendData(10)
})

test.php file 

<?php
var_dump($_POST);
?>

index.html

<!DOCTYPE HTML>
<html>
<head>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.3/jquery.min.js"></script>
<script src="checker.js"></script>
</head>
<body>
</body>
</html>
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1 Answer

  1. Editorial Team

    Try this and see what is logged in your console:

    function SendData(id){
    $.ajax({
        type: "POST",
        url: "test.php",
        data: "id=" + id,
        cache: false,
        success: function(response){
            console.log(response);
        }
    });
}
$(document).ready(function(){
    SendData(10)
});

    I am almost certain something is being returned by the server, you’re just not looking for it.

    If you want to retrieve your ID, you could change your php to:

    <?php
var_dump(json_encode($_POST));
?>

    and your js to:

    function SendData(id){
    $.ajax({
        type: "POST",
        url: "test.php",
        data: "id=" + id,
        cache: false,
        success: function(response){
            var id = JSON.parse(response).id;
            //do something with id
        }
    });
}
$(document).ready(function(){
    SendData(10)
});
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