ArrayList<String> list=new ArrayList<String>();
String[] strings = new String[list.size()];
list.toArray(strings);
判断是否基础类型的包专类
return ((Class) clz.getField("TYPE").get(null)).isPrimitive();
myeclipse自动热部署:在配置tomcat时设置启动参数 -Dcom.sun.management.jmxremote=true
select a.x ,b.y from
(select date_format((curdate() - interval m.s day),'%m-%d') as x
from (
select 0 as s union all
select 1 union all
select 2 union all
select 3 union all
select 4 union all
select 5 union all
select 6
) m where s <= day(LAST_DAY(CURDATE()))
) a
left join
(select count(uid) as y, date_format(from_unixtime(create_time),'%m-%d') as x
from sjf_user
where create_time >= unix_timestamp(now() - interval 7 day)
and shopid =xxx group by x
) b
on a.x = b.x order by a.x asc
js根据文件名后缀判断上传的文件是否正确
var str = "2323.jpg";
alert(str.match(/\.(png|jpg)$/i)!=null);
photo: (/\.jpg$|\.jpeg$|\.gif$/i),//图片格式
左右两列,做边固定宽度
,右边自适应高度的HTML
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>宽度自适应布局</title>
<style>
div {
height: 200px;
}
.left {
float: left;
width: 100px;
background: #00f;
}
.center {
background: #333;
margin-left:100px;
}
</style>
</head>
<body>
<div class="left">
我是left
</div>
<div class="center">
我是center
</div>
</body>
</html>
判断某个容器内是否有内容被选中
sel.containsNode(aNode,aPartlyContained)