从PHP获取数据到jQuery用于Hovercard - JSON

Question

ok so i am trying to use HoverCard on my website for the users that are registered on my site. how to i manage to get the data off the database using PHP and sending it to my jQuery script?

i know how to get data from PHP using jQuery but for some reason it is not working. Here is my code:

jQuery code:

var user = null;
$.post('userjson.php',{},
    function(output) {
        user = output;
    });

$('#loggedUser').hovercard({
    showCustomCard: true, 
    customCardJSON: user
});

PHP code:

$username = $_COOKIE['username'];

$user_select = mysql_query("SELECT * FROM users WHERE username='$username'",$con);
$user_array = mysql_fetch_array($user_select);

$user = array(
    'name' => $user_array['username'],
    'bio' => $user_array['bio'],
    'image' => $user_array['propic']
);

echo json_encode($user);

Answer 1

The POST is asynchronous so you must create the hover card in the callback

var user = null;
$.post('userjson.php',{}, function(output) {
    user = output;
    $('#loggedUser').hovercard({
        showCustomCard: true, 
        customCardJSON: JSON.parse(user)
    });
});     

In your code the user variable was not set when you tried to create the hover card.