天天打開頁面，只彈一次提示框。

html:
<div class="pop-download-warp">

<div class="pop-download">
    <h3>e手機App推出新功能</h3>
    <p>鄰里互撩,讓溝通無障礙!</p>
    <p class="font-bottom">羣組模式,讓羣聊嗨起來!</p>
    <a href="/app/download">前往eApp</a>
    <div class="close-btn" id="pop-download-btn"></div>
</div>

</div>

js:
$(function(){

function setCookie (name, value) {

var curDate = new Date();
//當前時間戳  
var curTamp = curDate.getTime();
//當前日期
var curDay = curDate.toLocaleDateString();
var brow = $.browser;
var curWeeHours = 0;
if (window.navigator.userAgent.indexOf("Chrome") !== -1) {
    //當日凌晨的時間戳,減去一毫秒是爲了防止後續獲得的時間不會達到00:00:00的狀態  
    curWeeHours = new Date(curDay).getTime() + (8 * 60 * 60 * 1000) - 1;
} else {
    curWeeHours = new Date(curDay).getTime() - 1;
}
//當日已通過去的時間（毫秒）  
var passedTamp = curTamp - curWeeHours;
//當日剩餘時間  
var leftTamp = 24 * 60 * 60 * 1000 - passedTamp;
var leftTime = new Date();
leftTime.setTime(leftTamp + curTamp);
//建立cookie  
document.cookie = name + "=" + value + ";expires=" + leftTime.toGMTString() + ";path=/";

}

function getCookie (name) {
    //name 爲想要取到的鍵值的鍵名
    var reg = /\s/g;
    var result = document.cookie.replace(reg, "");
    var resultArr = result.split(";");
    for (var i = 0; i < resultArr.length; i++) {
        var nameArr = resultArr[i].split("=");
        if (nameArr[0] == name) {
            return nameArr[1];
        }
    }
}

if(getCookie('display')=="hidden"){
    $('.pop-download-warp').css('display',"none")
}else{
    setCookie('display',"hidden")
    $('.pop-download-warp').css('display',"flex")
}

$("#pop-download-btn").on("click",function(){
    $('.pop-download-warp').css('display',"none")
})

})