You can also write $(document.getElementById('id')) , which will return a jQuery object and is equivalent to $('#id') . You can get the ... ... <看更多>

jQuery #id selector is the most efficient among all jQuery selectors. If you know the id of an element that ... ... <看更多>

However, if an ID contains a dot, jQuery does not select the element when doing jQuery('# ');. I've ... ... <看更多>

document.getElementById('contents'); //returns a HTML DOM Object var contents = $('#contents'); //returns a jQuery Object ... ... <看更多>