一次Ajax请求从PHP服务器端返回所有数据，后在客户端根据需要排序，服务器返回如下JSON数据，
{'all':[{'id':'1','name':'Bruce','vote':151,'bad':1,'title':'学习Javascript'},
{'id':'2','name':'Lini','vote':11,'bad':141,'title':'学习Ajax'},
{'id':'3','name':'Jack','vote':121,'bad':4,'title':'学习JQuery'},
{'id':'4','name':'Cals','vote':151,'bad':41,'title':'学习PHP'},
{'id':'5','name':'Lucy','vote':13,'bad':5,'title':'学习MySQL'},
{'id':'6','name':'Paul','vote':166,'bad':11,'title':'学习CSS'},
{'id':'7','name':'John','vote':15,'bad':188,'title':'学习HTML'},
{'id':'8','name':'Ben','vote':19,'bad':335,'title':'学习C++'},
{'id':'9','name':'Coa','vote
$("p:first").before(" <center> <button id=\"button1\" onClick=\"cut()\">剪切 </button> <button id=\"button2\">复制 <\/button> ......
