JS操作Cookie写入和读取实例代码

写入cookie实例！

var u = "value=123";

document.cookie = u;

读取cookie实例,读取value的值！

var c_name="value"; // 变量名

if (document.cookie.length > 0) {

c_start = document.cookie.indexOf(c_name + "=")

if (c_start != -1) {

c_start = c_start + c_name.length + 1

c_end = document.cookie.indexOf(";", c_start)

if (c_end == -1) c_end = document.cookie.length

// document.write(document.cookie.substring(c_start,c_end)+"
");

var sss= unescape(document.cookie.substring(c_start, c_end)) // 取出值

alert(sss)

}

}