When was the newsletter in Text B written?

HTML 代码 : Name: Newsletter: jQuery 代码 : $("form input") 结果 :

Facebook的算法叫做（ ） A: Penguin B: Newsfeed C: Panda D: Newsletter

HTML代码:Name:</label>Newsletter:</label></fieldset></form>jQuery代码:$('label+input')结果:

To snag new customers and keep the old ones remembering you vividly, seriously plan to launch a newsletter, and send it to all prospects and customers on a basis.

中国大学MOOC: To snag new customers and keep the old ones remembering you vividly, seriously plan to launch a newsletter, and send it to all prospects and customers on a basis.

运行下面代码，弹出的对话框中输出_________。<;script type="text/javascript">;$(document).ready(function(){alert($("label + input").val());});<;/script>;<;form>;<;input name="name" value="111"/>;<;label>;Number:<;/label>;<;input name="newsletter" value="222"/>;<;/form>;