Fetch variable from php with javascript

Question

I have a php file which contains the following code:

 function render() {
    //fetches all the data from input.
    $date = date("Y-m-d H:i:s");
    $con = mysql_connect("127.0.0.1","root","");
    $database = mysql_select_db("guestbook");
    $name = $_POST['name'];
    $email = $_POST['email'];
    $post = $_POST['post'];
    $sql = "INSERT INTO gast(name, email, post, date) VALUES('$name','$email','$post','$date')";
    $input = mysql_query($sql);
    mysql_close($con);
}

With javascript, I'd like to retrieve those variables, something like this:

document.getElementById('button').onclick = clicked;
    function clicked() {
    var name = document.render.name.value;
    var post = document.render.post.value;
    var email = document.render.email.value;
    }

I have included that javascript code in my body, but it doesn't work. How do I get the value?

You can't access php function with javascript :) if you want to access data, use ajax — Mantas Vaitkūnas
– Mantas Vaitkūnas, Commented Jun 27, 2012 at 13:06
PHP runs on the server, javascript runs on the client, so they have no access to each other, and indeed don't "run" at the same time. — nathan
– nathan, Commented Jun 27, 2012 at 13:27

Pedro L. · Accepted Answer · 2012-06-27 13:26:28Z

2

Use AJAX. With jQuery you can get any data from the server very easy.

$.get('test.php', function(data) {
  alert(data);
});

answered Jun 27, 2012 at 13:26

Pedro L.

7,5963 gold badges28 silver badges27 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Gabriel Baker · Accepted Answer · 2012-06-27 13:06:09Z

0

You can't really, unless the js and php code is on the same page, then you could do

var namn = "<?php echo $name; ?>";

but unless the php is passing the variables to the file that your js is in, you can't really do anything.

answered Jun 27, 2012 at 13:06

Gabriel Baker

1,21911 silver badges21 bronze badges

Collectives™ on Stack Overflow

Fetch variable from php with javascript

2 Answers 2

Comments

Comments

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Related