How to assign the value of a javascript variable to a php variable

Question

I\'ve a form.

Answer 1

add two hidden input to your form and use jQuery to change their value

Answer 2

Try this:

var pos = $('#name').position();
$("form").append('<input type="hidden" name="name_position" value="' + pos.left + ',' + pos.top + '" />');

Then read name_position value from the POST data in the server side code.

Answer 3

The easiest way would be to use a hidden input field and use jQuery to set the value for this input field or these input fields in your case.

HTML:

<form action="inc/genxml.php" method="post">
    <input id="nameTxt" name="name" type="text" value="test"/>
    <input id="posLeft" name="posLeft" type="hidden" />
    <input id="posRight" name="posRight" type="hidden" />
    <button id="nameSave" class="left">Save</button>
</form>

JS:

$('#nameSave').click(
    function() {
        var pos = $('#name').position();
        $('#posLeft').val(pos.left);
        $('#posRight').val(pos.right);
    }
);