Displaying Javascript Content In HTML Or Php Variable - php

Question

I have javascript that gets the Facebook name of a user when they login on my file indir.php. However, I cannot get that name javascript variable to transform into a php variable or a <input type="hidden" name="name" value="" />. Currently, I can get the name using:
<script>
...facebook stuff...
function login() {
FB.api('/me', function(response) {
document.getElementById('login').style.display = "block";
var mos = response.name;
document.getElementById('login').innerHTML = mos;
}
}
...
</script>
And then display the name using:
<div id="login" style ="display:none"></div>

Answer 1

This should let you get the name in the field
First Add an id to the input field
<input type="hidden" name="name" id="fb_name" value="" />
Then
<script>
...facebook stuff...
function login() {
FB.api('/me', function(response) {
document.getElementById('login').style.display = "block";
var mos = response.name;
document.getElementById('login').innerHTML = mos;
//Enter the value in field
var field= document.getElementById("fb_name");
field.value = mos;
}
...
</script>

Answer 2

I think part of the problem is that the opening brackets on the FB.api call are not closed see snippet below.
If this is this done then the javascript function will update the div with the value of response.name.
It would only need to be a php variable if you are doing something with the information server side. You could then send it using AJAX if needed.
function login(){
FB.api('/me', function(response) {
document.getElementById('login').style.display = "block";
var mos = response.name;
document.getElementById('login').innerHTML = mos;
});
});

Answer 3

You can send it to php in a POST-request using AJAX:
var xhr = new XMLHttpRequest();
var content = "c=" + mos;
xhr.open("POST", "serverscript.php", true);
xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
xhr.send(content);
Receive at server side using something like
<?php
if (isset($_POST['c'])) {
$data = htmlspecialchars($_POST['c'], ENT_QUOTES, 'UTF-8');
}
?>

Answer 4

Try this something like this:
Javascript:
<script>
var name = 'Luis';
var variablejs = 'Your javascript value: ' + name ;
</script>
PHP:
<?php
$variablephp = "<script> document.write(variablejs) </script>";
echo "variablephp = $variablephp";
?>