前端设置用户设置，获取，清空Cookie setCookie,getCookie,clearCookie

直接贴代码

function setCookie(name, value, seconds) {
    seconds = seconds || 0;   //seconds有值就直接赋值，没有为0
    var expires = "";
    if (seconds != 0) {      //设置cookie生存时间
        var date = new Date();
        date.setTime(date.getTime() + (seconds * 1000));
        expires = "; expires=" + date.toGMTString();
    }
    document.cookie = name + "=" + escape(value) + expires + "; path=/";   //转码并赋值
}function setCookie(name, value, seconds