JQuery (UI): Javascript Variable convert to PHP Variable - Stack Overflow

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First of all.. is this possible? I work&create a var in javascript (jquery ui framework) and then when I click on the "Submit" button of my form it should this variable?

HTML & Javascript (Jquery UI):

<script>

      $(document).ready(function() {

var slider1 = $( "#slider1" ).slider( "value" );
var slider2 = $( "#slider2" ).slider( "value" );
      });
</script>

pseudo: HTML & PHP:

<?php echo slider1 ?>

How can I echo the value of #slider1 ??

First of all.. is this possible? I work&create a var in javascript (jquery ui framework) and then when I click on the "Submit" button of my form it should this variable?

HTML & Javascript (Jquery UI):

<script>

      $(document).ready(function() {

var slider1 = $( "#slider1" ).slider( "value" );
var slider2 = $( "#slider2" ).slider( "value" );
      });
</script>

pseudo: HTML & PHP:

<?php echo slider1 ?>

How can I echo the value of #slider1 ??

• php
• javascript
• jquery

Share Improve this question Follow edited Jan 25, 2011 at 8:23 Dan Grossman 52.4k1010 gold badges115115 silver badges101101 bronze badges asked Jan 25, 2011 at 8:19 TomkayTomkay 5,1602121 gold badges6565 silver badges9494 bronze badges 2

• What is #slider1? Is that some kind of input in a form? – Dan Grossman Commented Jan 25, 2011 at 8:23
• 1 You could create a hidden input field that holds the 'slider1' variable for example. Everytime the slider1 value is updated you should also update the hidden input field. Then, after submitting the hidden variable will be available in PHP. – dvk Commented Jan 25, 2011 at 8:24

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4 Answers 4

Sorted by: Reset to default 5

You cannot assign a variable from javascript to php, but you can set a javascript variable to a form input element before you send the form, then you can get the values via the $_POST or $_GET (or the $_REQUEST) superglobal arrays, based on your method ().

http://php/manual/en/reserved.variables.get.php

http://php/manual/en/reserved.variables.post.php

For example:

Javascript:

    $(document).ready(function(){
      var test = "test";
      $('#someinput').value(test);
   });

Html:

<form action="some.php" method="post">
<input type="hidden" id="someinput" name="someinput"/>
<input type="submit" value="send"/>
</form>

PHP:

<?php
  var_dump($_POST['someinput']);
?>

Mike you cannot mix server side code with client side code. They are pletely seperate!

What you can do is just before the form posts put some value inside a hidden input and check it on the server side

add it to hidden input in your form

like

$('#hidden_field').val(slider1)

You are misunderstanding how PHP and Javascript work. PHP runs on the server, JavaScript runs on the browser. When JavaScript runs, PHP is already done generating the document.

If you have a JavaScript variable, you need to use JavaScript to alter the element.

For example:

<div id="slider_value"></div>

<script>

      $(document).ready(function() {

var slider1 = $( "#slider1" ).slider( "value" );
var slider2 = $( "#slider2" ).slider( "value" );

// Assign value to DIV
$("#slider_value").html("Value: "+slider1);

});
</script>

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