Question

我试图创建一个有两个选项的模态：是或否。当用户选择“否”时，我将创建条件value=no，然后不显示模态。

问题是我无法完成它。如果答案是肯定的，我可以操纵信息，我需要显示一个模态问一个问题，得到用户答案，并根据这个并每隔15天做一些事情。

我的代码目前无法正常运行

<script>
    function setCookie(cname, cvalue, exdays) {
        var d = new Date();
        d.setTime(d.getTime() + (exdays * 24 * 60 * 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 "";
    }

    function checkCookie() {

        $('#hewant').on('click', function() {
            var valyes = $(this).text();
            console.log(valyes);
        });

        $('#hedont').on('click', function() {
            var valno = $(this).text();
            console.log(valno);
        });
        var user = getCookie("username");

        if (user != "") {
            alert("Welcome again " + user);
        } else {
            $("#myModalcashout").modal();
            user = "testing me";
            if (user != "" && user != null) {
                setCookie("username", user, 15);
            }
        }
    }
</script>

<body onload="checkCookie()">

    <div class="modal fade" id="myModalcashout">
        <div class="modal-dialog">
            <!-- for modal to active manually->
         <!-- Modal content-->
            <div class="modal-content">

                <div class="modal-body">

                    <p style="text-align:center">test</p>
                    <p style="text-align:center">question</p>
                    <p style="text-align:center">for u</p>
                    <div id="hewant" value="yes"> yes i am </div>
                    <div id="hedont" value="no"> no i dont</div>
                </div>

            </div>

        </div>
    </div>
</body>

Answer 1

我为您重新构建了代码。对于初学者来说，两个按钮只需要一个监听器，可以使用模式中的按钮（我从class更改为div标签上的button进行分配。

注意：“运行此代码段”在此沙盒装环境中无法处理Cookie操作，因此您必须自行测试。

现在有一个showModal（）函数，你将在load上调用它，它负责显示你的模态并将一个点击监听器附加到模态的两个按钮上。

当用户在模态上单击是或否时，我们会得到他们的答案并将其传递给checkCookie()函数，该函数按照您的要求执行。

我将你的创建和设置cookie函数替换为经过测试和工作的函数（还添加了eraseCookie（）），对所有3个函数Here

有一个很好的解释

showModal();

function showModal() {
  // only show modal if cookie for the user is null
  var user = readCookie("username");
  if (user != null) {
    alert("Welcome again " + user);
  } 
  else {
    user = "testing me";
    $("#myModalcashout").modal();

    // add listener on buttons
    $('.modalButton').on('click', function() {
      $('#myModalcashout').modal().hide();
      var answer = $(this).val();
      console.log(answer);
      
      // create a cookie with the users answer to the modal
      createCookie("username", answer, 15);
    });
  }
}

function createCookie(name, value, days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
    var expires = "; expires=" + date.toGMTString();
  } else var expires = "";
  document.cookie = name + "=" + value + expires + "; path=/";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for (var i = 0; i < ca.length; i++) {
    var c = ca[i];
    while (c.charAt(0) == ' ') c = c.substring(1, c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
  }
  return null;
}

function eraseCookie(name) {
  createCookie(name, "", -1);
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://npmcdn.com/tether@1.2.4/dist/js/tether.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js" integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn" crossorigin="anonymous"></script>


<div class="modal fade" id="myModalcashout">
  <div class="modal-dialog">
    <!-- for modal to active manually->
    <!-- Modal content-->
    <div class="modal-content">
      <div class="modal-body">
        <p style="text-align:center">test</p>
        <p style="text-align:center">question</p>
        <p style="text-align:center">for u</p>
        <button class="modalButton" value="yes"> yes i am </button>
        <button class="modalButton" value="no"> no i dont</button>
      </div>
    </div>
  </div>
</div>

使用js从bootrap模式获取cookie的值

1 个答案: