![js中有["1","2","3","4"]这样一个string，怎么把它变成array](/aiimages/js%E4%B8%AD%E6%9C%89%5B%26quot%3B1%26quot%3B%2C%26quot%3B2%26quot%3B%2C%26quot%3B3%26quot%3B%2C%26quot%3B4%26quot%3B%5D%E8%BF%99%E6%A0%B7%E4%B8%80%E4%B8%AAstring%EF%BC%8C%E6%80%8E%E4%B9%88%E6%8A%8A%E5%AE%83%E5%8F%98%E6%88%90array.png)
setcookies(name,value)
{
var
days
=
30
//此
cookie
将被保存
30
天
var
exp
=
new
date()
//new
date("december
31,
9998")
exp.settime(exp.gettime()
+
days*24*60*60*1000)
document.cookie
=
name
+
"="+
escape(value)
+"expire*="+
**p.togmtstring()
}
//读取cookiefunction
getcookies(name)
{
var
arr
=
document.cookie.match(new
regexp("(^|
)"+name+"=([^]*)(|$)"))
if(arr
!=
null)
return
unescape(arr[2])
return
null
}
//删除cookiefunction
delcookies(name)
{
var
exp
=
new
date()
exp.settime(exp.gettime()
-
1)
var
cval=getcookie(name)
if(cval!=null)
document.cookie=name
+"="+cval+"expire*="+**p.togmtstring()
}
JS设置cookie:
假设在A页面中要保存变量username的值("jack")到cookie中,key值为name，则相应的JS代码为：
document.cookie="name="+username
JS读取cookie:
假设cookie中存储的内容为：name=jackpassword=123
则在B页面中获取变量username的值的JS代码如下：
var username=document.cookie.split("")[0].split("=")[1]
