Access session variables from JavaScript

Question

Is it possible to access session variables made in from JavaScript, and how can I replicate this PHP code in JavaScript?

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if(empty($_SESSION['name'] {
   echo 'foo';
}

Answer 1

You could access a page via Ajax which would return the variable value:

Using jQuery:

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

And the PHP page (myVariable.php):

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<?php echo $_SESSION['user_id']; ?>