Interactive website stuck on 3 please help


#1

the message tells there is a bug on line3

var main= function(){
    $('btn').click(function('<li>'){
        var post=$('.status-box').val();
        $('<li>').text(post).prependTo('.posts');
    
});
}

$(document).ready(main)

#2

Is btn a class or an id? We know it is not a node type.