javascript - 添加 cookie 仅显示一次弹出窗口

Question

我有一个家庭作业，我需要帮助来解决它我有一个弹出代码HTML

/*
You'll probably want to drop a cookie so this doesn't pop up everytime. I'd recommend this plugin:
https://github.com/js-cookie/js-cookie
*/

overAge = function () {
  $('#age-verify').addClass('hidden');
}

underAge = function () {
  $('#age-verify').addClass('under');
}

goBack = function () {
    window.history.back();
}

#age-verify {
  position: fixed;
    z-index: 9997;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.6);
  transition: 500ms;
}
#age-verify .window {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 400px;
  height: 250px;
  overflow: hidden;
  padding: 40px;
  margin-left: -200px;
  margin-top: -125px;
  background-color: #fff;
  border: 6px solid #ED6A5A;
  box-sizing: border-box;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  transition: 500ms;
  z-index: 9998;

}
#age-verify .window span {
  display: block;
  text-align: center;
  margin-bottom: 10px;
  font-family: "Source Sans Pro", sans-serif;
}
#age-verify .window span.title {
  color: #ED6A5A;
  font-size: 24px;
}
#age-verify .window button {
  border: 0;
  margin: 0;
  padding: 0;
  width: 48%;
  height: 60px;
  color: #FFF;
  font-size: 18px;
  background-color: #ED6A5A;
  margin-top: 20px;
  font-family: "Source Sans Pro", sans-serif;
  -webkit-transform: scale(1);
          transform: scale(1);
  transition: .2s;
}
#age-verify .window button.back {
  display: block;
  float: none;
  margin: auto;
  background-color: #fff;
  color: #ED6A5A !important;
  margin-top: 20px;
}
#age-verify .window button.yes {
  float: left;
}
#age-verify .window button.no {
  float: right;
}
#age-verify .window button:hover {
  -webkit-transform: scale(1.1);
          transform: scale(1.1);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  background-color: #f29488;
}
#age-verify .window .underBox {
  position: absolute;
  width: 400px;
  height: 250px;
  padding: 40px;
  top: 100%;
  left: 0;
  right: 0;
  background-color: #ED6A5A;
  transition: 500ms;
  box-sizing: border-box;
}
#age-verify .window .underBox * {
  color: #FFF !important;
}
#age-verify.hidden {
  opacity: 0;
  visibility: hidden;
}
#age-verify.hidden .window {
  -webkit-transform: scale(0.5);
          transform: scale(0.5);
}
#age-verify.under .window .underBox {
  top: 0%;
}

<div id="age-verify">
<div class="window"><span class="title">Are you over 18?</span> <span>To visit our website, you must be of legal drinking age.</span> <button class="yes" onclick="overAge()">Yes</button> <button class="no" onclick="underAge()">No</button>
<div class="underBox"><span class="title">Sorry!</span> <span>You need to be at least 18 to visit our website.</span> <button class="back" onclick="parent.location='https://www.google.dk/'">Go Back</button></div>
<span> </span></div>
</div>

我想添加 cookie 在加载时仅显示一次弹出窗口，cookie 在一小时后过期

我尝试了这么多文章，但我是否知道如何以正确的方式设置它

https://www.thepolyglotdeveloper.com/2018/02/create-email-subscription-popup-jquery/

谁能帮我解决一下:)

Answer 1

您可以使用我在代码末尾添加的这两个函数来获取和设置 cookie。如您所说，cookie 在 60 分钟后过期。当页面加载时，我们检查是否可以获得我们想要的 cookie。如果可以的话，我们会隐藏弹出窗口，否则它会显示。

/*
You'll probably want to drop a cookie so this doesn't pop up everytime. I'd recommend this plugin:
https://github.com/js-cookie/js-cookie
*/

if(getCookie("age") != "")
{
$('#age-verify').addClass('hidden');
}
overAge = function () {
  setCookie("age", "overAge");
  $('#age-verify').addClass('hidden');
}

underAge = function () {
  $('#age-verify').addClass('under');
}

goBack = function () {
    window.history.back();
}

function setCookie(cname, cvalue) {
    var d = new Date();
    d.setTime(d.getTime() + (60 * 1000));
    var expires = "expires=" + d.toGMTString();
    document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
}

function getCookie(cname) {
    var name = cname + "=";
    var decodedCookie = decodeURIComponent(document.cookie);
    var ca = decodedCookie.split(';');
    for (var i = 0; i < ca.length; i++) {
        var c = ca[i];
        while (c.charAt(0) == ' ') {
            c = c.substring(1);
        }
        if (c.indexOf(name) == 0) {
            return c.substring(name.length, c.length);
        }
    }
    return "";
}

#age-verify {
  position: fixed;
    z-index: 9997;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.6);
  transition: 500ms;
}
#age-verify .window {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 400px;
  height: 250px;
  overflow: hidden;
  padding: 40px;
  margin-left: -200px;
  margin-top: -125px;
  background-color: #fff;
  border: 6px solid #ED6A5A;
  box-sizing: border-box;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  transition: 500ms;
  z-index: 9998;

}
#age-verify .window span {
  display: block;
  text-align: center;
  margin-bottom: 10px;
  font-family: "Source Sans Pro", sans-serif;
}
#age-verify .window span.title {
  color: #ED6A5A;
  font-size: 24px;
}
#age-verify .window button {
  border: 0;
  margin: 0;
  padding: 0;
  width: 48%;
  height: 60px;
  color: #FFF;
  font-size: 18px;
  background-color: #ED6A5A;
  margin-top: 20px;
  font-family: "Source Sans Pro", sans-serif;
  -webkit-transform: scale(1);
          transform: scale(1);
  transition: .2s;
}
#age-verify .window button.back {
  display: block;
  float: none;
  margin: auto;
  background-color: #fff;
  color: #ED6A5A !important;
  margin-top: 20px;
}
#age-verify .window button.yes {
  float: left;
}
#age-verify .window button.no {
  float: right;
}
#age-verify .window button:hover {
  -webkit-transform: scale(1.1);
          transform: scale(1.1);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  background-color: #f29488;
}
#age-verify .window .underBox {
  position: absolute;
  width: 400px;
  height: 250px;
  padding: 40px;
  top: 100%;
  left: 0;
  right: 0;
  background-color: #ED6A5A;
  transition: 500ms;
  box-sizing: border-box;
}
#age-verify .window .underBox * {
  color: #FFF !important;
}
#age-verify.hidden {
  opacity: 0;
  visibility: hidden;
}
#age-verify.hidden .window {
  -webkit-transform: scale(0.5);
          transform: scale(0.5);
}
#age-verify.under .window .underBox {
  top: 0%;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="age-verify">
<div class="window"><span class="title">Are you over 18?</span> <span>To visit our website, you must be of legal drinking age.</span> <button class="yes" onclick="overAge()">Yes</button> <button class="no" onclick="underAge()">No</button>
<div class="underBox"><span class="title">Sorry!</span> <span>You need to be at least 18 to visit our website.</span> <button class="back" onclick="parent.location='https://www.google.dk/'">Go Back</button></div>
<span> </span></div>
</div>