javascript - 未获取现有 cookie 时弹出年龄验证

Question

当用户第一次访问该网站时，我会弹出一个年龄验证窗口。我想在第一次访问该站点时弹出框，除非关闭浏览器并返回该站点，否则不要再次询问。到目前为止，它像它应该的那样工作，弹出窗口并创建 cookie。但是，当我访问网站上的其他页面并继续弹出时，它无法识别 cookie。

function getBaseUrl(){return window.location.protocol+"//"+window.location.host}function getTemplate(e){var n=getBaseUrl()+handlebarTemplatesPath+e+".hbs";return jQuery.get(n).then(function(e){return Handlebars.compile(e)})}var handlebarTemplatesPath="/templates/components/common/";addAgeVerifyToBody=function(){getTemplate("age-verify").done(function(e){jQuery("body").append(e)})},jQuery(document).ready(function(){"true"!=Cookies.get("age-verified")&&addAgeVerifyToBody()}),overAge=function(){jQuery("#age-verify").addClass("hidden"),Cookies.set("age-verified","true")},underAge=function(){jQuery("#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, 0.8);
  transition: 500ms;
}
#age-verify .window {
  position: absolute;
  z-index: 9998;
  top: 50%;
  left: 50%;
  width: 400px;
  height: 250px;
  overflow: hidden;
  padding: 40px;
  margin-left: -200px;
  margin-top: -125px;
  background-color: #fff;
  border: 6px solid Red;
  box-sizing: border-box;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  transition: 500ms;
}
#age-verify .window span {
  display: block;
  text-align: center;
  margin-bottom: 10px;
  font-family: "Open Sans", sans-serif;
  font-size: 17px;
}
#age-verify .window span.title {
  color: Red;
  font-size: 24px;
}
#age-verify .window button {
  border: 0;
  margin: 0;
  padding: 0;
  width: 48%;
  height: 60px;
  color: #FFF;
  font-size: 18px;
  background-color: Red;
  margin-top: 20px;
  font-family: "Open Sans", sans-serif;
  transform: scale(1);
  transition: .2s;
}
#age-verify .window button.back {
  display: block;
  float: none;
  margin: auto;
  background-color: #fff;
  color: Red !important;
  margin-top: 20px;
}
#age-verify .window button.yes {
  float: left;
}
#age-verify .window button.no {
  float: right;
}
#age-verify .window button:hover {
  transform: scale(1.1);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  background-color: #ff3333;
}
#age-verify .window .underBox {
  position: absolute;
  width: 400px;
  height: 250px;
  padding: 40px;
  top: 100%;
  left: 0;
  right: 0;
  background-color: Red;
  transition: 500ms;
  box-sizing: border-box;
}
#age-verify .window .underBox * {
  color: #FFF !important;
}
#age-verify.hidden {
  opacity: 0;
  visibility: hidden;
}
#age-verify.hidden .window {
  transform: scale(0.5);
}
#age-verify.under .window .underBox {
  top: 0%;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/handlebars.js/4.0.12/handlebars.min.js"></script>
<div id="age-verify">
  <div class="window">
    <span class="title">Are you over 21?</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 21 to visit our website.</span>
      <button class="back" onclick="goBack()">Go Back</button>
    </div>
  </div>
</div>

Answer 1

尝试这样的事情:

    $(document).ready(function(){

        window.onload = function() {
           checkCookie();
        };

        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 "";
        }
        function checkCookie() {
            var user=getCookie("age-verified");
            if (user != "") {
                $("#age-verify").addClass("hidden");
            }
        }
        

        var yesEl = document.getElementById('yes');
        var noEl = document.getElementById('no');

        yesEl.addEventListener('click', function(){
            //document.cookie = 'age-verified; expires=1';
            $('#age-verify').addClass('hidden');
            function setCookie(cname,cvalue,exdays) {
                var d = new Date();
                d.setTime(d.getTime() + (exdays*1));
                var expires = "expires=" + d.toGMTString();
                document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
            }
        });

        noEl.addEventListener('click', function() {
            $('#age-text').addClass('hiddenText');
            $('#under-age').removeClass('hiddenText');
            $('#yes').addClass('hiddenText');
        });

    });
    

#age-verify {
  position: fixed;
  z-index: 9997;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.8);
}
#age-verify .window {
  position: absolute;
  z-index: 9998;
  top: 50%;
  left: 50%;
  width: 400px;
  height: 250px;
  overflow: hidden;
  padding: 40px;
  margin-left: -200px;
  margin-top: -125px;
  background-color: #fff;
  border: 6px solid Red;
  box-sizing: border-box;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}
#age-verify .window span {
  display: block;
  text-align: center;
  margin-bottom: 10px;
  font-family: "Open Sans", sans-serif;
  font-size: 17px;
}
#age-verify .window span.title {
  color: Red;
  font-size: 24px;
}
#age-verify .window button {
  border: 0;
  margin: 0;
  padding: 0;
  width: 48%;
  height: 60px;
  color: #FFF;
  font-size: 18px;
  background-color: Red;
  margin-top: 20px;
  font-family: "Open Sans", sans-serif;
  transform: scale(1);
}
#age-verify .window button.back {
  display: block;
  float: none;
  margin: auto;
  background-color: #fff;
  color: Red !important;
  margin-top: 20px;
}
#age-verify .window button.yes {
  float: left;
}
#age-verify .window button.no {
  float: right;
}
#age-verify .window button:hover {
  transform: scale(1.1);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  background-color: #ff3333;
}
#age-verify .window .underBox {
  position: absolute;
  width: 400px;
  height: 250px;
  padding: 40px;
  top: 100%;
  left: 0;
  right: 0;
  background-color: Red;
  transition: 500ms;
  box-sizing: border-box;
}
#age-verify .window .underBox * {
  color: #FFF !important;
}
#age-verify.hidden {
  opacity: 0;
  visibility: hidden;
}
#age-verify.hidden .window {
  transform: scale(0.5);
}
#age-verify.under .window .underBox {
  top: 0%;
}
.hiddenText {
  display: none;
}   

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js" type="text/javascript"></script>
<div id="age-verify">
  <div class="window">
    <div id="age-text">
      <span class="title">Are you over 21?</span>
      <span>You must be 21 to visit this website.</span>
    </div>
    <div id="under-age" class="hiddenText">
      <span class="title">Sorry!</span>
      <span>You need to be at least 21 to visit our website.</span>
    </div>
    <button id="yes" class="yes">Yes</button>
    <button id="no" class="no">No</button>
  </div>
</div>