I would like to get the word 'test' from the callback function psCallback below.

alert(opt); is now displaying the word 'test'

What am I doing wrong?

PHP Code:

function psCallback() {
    var 
content 'test';
    
    return 
content;
}
    
    
jQuery(document).ready(function () {
    
    var 
opt = {callbackpsCallback};
        
    
alert(opt);    
        
    return 
false;

});