JAVASCRIPT

referencing multiple elements into one jquery

bad
$("#clientId").fadeIn();
$("#username").fadeIn();
$('#password').fadeIn();

good
$("#clientId, #username, #password").fadeIn();

jquery creating several items

var html = '<div class="freeze"></div>' + 
           '<div class="parent">' + 
               '<div class="loadimg"></div>' +
               '<div class="header"></div>' +
               '<div class="msg"></div>' +
           '</div>';
$(document.body).append(html);