cookie简单应用

//创建cookie
function setCookie(cname, cvalue, exday) {
    var oDay = new Date();
    oDay.setDate(oDay.getDate() + exday);
    var expires = "expires=" + oDay;
    document.cookie = cname + "=" + cvalue + ";" + expires;
}

//查询cookie
function getCookie(name) {
    var str = document.cookie;
    var arr = str.split("; "); //将冒号“ ; ” 转化成逗号
    for (var i in arr) {
        var arr1 = arr[i].split("="); //将等号“ = ”转化成都好
        if (arr1[0] == name) {
            return arr1[1];
        }
    }
}

//删除cookie
function removeCookie(name) {
    setCookie(name, 1, -1);
}//创建cookie
function setCookie