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设置,获取,删除cookie
// 设置cookie
function setCookie(name,value,iDay){
if(iDay){
var oDate = new Date();
oDate.setDate(oDate.getDate()+iDay);
document.cookie=name+'='+value+';path=/;expires='+oDate;
}else{
document.cookie=name+'='+value+';path=/';
}
}
// 获取cookie
function getCookie(name){
var arr = document.cookie.split('; ');
for(var i=0; i<arr.length; i++){
var tmp = arr[i].split('=');
if(name == tmp[0]){
return tmp[1];
}
}
}
// 删除cookie
function removeCookie(name){
setCookie(name,'',-1);
}
获取cookie的value值
//获得值
function getCookiev(cookie_name) {
var allcookies = document.cookie;
//索引长度,开始索引的位置
var cookie_pos = allcookies.indexOf(cookie_name);
// 如果找到了索引,就代表cookie存在,否则不存在
if (cookie_pos != -1) {
// 把cookie_pos放在值的开始,只要给值加1即可
//计算取cookie值得开始索引,加的1为“=”
cookie_pos = cookie_pos + cookie_name.length + 1;
//计算取cookie值得结束索引
var cookie_end = allcookies.indexOf(";", cookie_pos);
if (cookie_end == -1) {
cookie_end = allcookies.length;
}
//得到想要的cookie的值
var value = unescape(allcookies.substring(cookie_pos, cookie_end));
}
return value;
}