JS 操作 Cookie

function setCookie(name, value, day) {
var oDate = new Date();
oDate.setDate(oDate.getDate() + day);
document.cookie = name + "=" + value + ";expires=" + oDate;
}

function getCookie(name) {
var arr = document.cookie.split('; ');
for (var i = 0; i < arr.length; i++) {
var arr2 = arr[i].split('=');
if (arr2[0] === name) {
return arr2[1];
}
}
return '';
}

function removeCookie(name) {
setCookie(name, "1", -1);
}