Question

我遇到一种情况，当用户滚动时，“日期时间选择器”下拉菜单没有停留在原位。先前使用.daterangepicker {position: fixed !important;}的尝试均未成功，这导致Datetime Picker不能正确地固定在其位置上，并且还导致用户无法查看整个Datetime Picker下拉列表。

有没有一种方法可以使Datetime Picker菜单在滚动时保持固定，并且还允许用户查看Datetime Picker的全部内容？这个问题很难解决，我们将不胜感激。

var modal = document.getElementById("myModal");
var btn = document.getElementById("myBtn");
var span = document.getElementsByClassName("close")[0];
btn.onclick = function() {
  modal.style.display = "block";
}
span.onclick = function() {
  modal.style.display = "none";
}
window.onclick = function(event) {
  if (event.target == modal) {
    modal.style.display = "none";
  }
}

$(function() {
	$('input[name="datetimes"]').daterangepicker({
		timePicker: true,
		startDate: moment().startOf('hour'),
		endDate: moment().startOf('hour').add(32, 'hour'),
		locale: {
			format: 'M/DD hh:mm A'
		}
	});
});

.modal {
  display: none;
  z-index: -10000000000000;
  padding-top: 100px;
  left: 0px;
  top: 0px;
  width: 100%;
  max-height: 100%;
  background-color: rgb(0,0,0);
  background-color: rgba(0,0,0,0.4);
}

.modal-content {
  background: linear-gradient(-45deg, #89f7fe 0%, #66a6ff 60%, #23A6D5, #23D5AB);
  margin:auto;
  padding: 20px;
  border: 1px solid #888;
  width: 500px;
  height: 500px;
}

.modal-backdrop {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 1030;
  background-color: rgba(0, 0, 0, 0.5);
  opacity: 0.5;
}

  .daterangepicker select {
  display: inline-block;
}

<!DOCTYPE html>
<html lang="en">

<head>

  <link href="vendor/fontawesome-free/css/all.min.css" rel="stylesheet" type="text/css">
  <link href="https://fonts.googleapis.com/css?family=Nunito:200,200i,300,300i,400,400i,600,600i,700,700i,800,800i,900,900i" rel="stylesheet">

    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/js/materialize.min.js"></script>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/css/materialize.min.css">

    <link href="css/couponsexample.css" rel="stylesheet">
  <link href="vendor/datatables/dataTables.bootstrap4.min.css" rel="stylesheet">

</head>

<body id="page-top">
  <div id="wrapper">
    <div id="content-wrapper" class="d-flex flex-column">
      <div id="content">
        <div class="container-fluid">
          <div class="card shadow mb-4">
            <div class="card-header py-3">
              <span style="display:flex; justify-content:flex-end; width:100%; padding:0;">
                <button class="buttonTest" id="myBtn">New Discount</button>
              </span>
            </div>
            <div class="card-body">
              <div id="myModal" class="modal">
                <div class="modal-content" >
                    <form id="msform">
                        <span class="close">&times;</span>
                      <fieldset>
                        <h2 class="fs-title">Time Period</h2>
                        <h3 class="fs-subtitle">Step 4</h3>
                          <input type="text" name="datetimes" />
                      </fieldset>
                    </form>
                </div>
              </div>
            </div>
          </div>
        </div>
      </div>
    </div>
  </div>

  <script type="text/javascript" src="https://cdn.jsdelivr.net/jquery/latest/jquery.min.js"></script>
  <script type="text/javascript" src="https://cdn.jsdelivr.net/momentjs/latest/moment.min.js"></script>
  <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/daterangepicker/daterangepicker.min.js"></script>
  <link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/npm/daterangepicker/daterangepicker.css" />

  <script src="vendor/datatables/jquery.dataTables.min.js"></script>
  <script src="vendor/datatables/dataTables.bootstrap4.min.js"></script>

  <script src="couponsjs.js"></script>

</body>

</html>

Answer 1

我认为这就是您的意思，至少这是我的理解。

添加此样式：

.card {
    position: fixed !important;
    top: 0;
    right: 0;
    left: 0;
}
.modal {
    display: none;
    z-index: -10000000000000;
    padding-top: 100px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(0%,-50%);
    width: 100%;
    max-height: 100%;
    background-color: rgb(0,0,0);
    background-color: rgba(0,0,0,0.4);
}

.modal现在将以top: 50%; left: 50%; transform: translate(0%,-50%);居中

.card现在将保持顶部，您可能定位了错误的选择器。

Answer 2

在daterangepicker.js中设置：

this.parentEl = $(element).parent().closest('div');

或在daterangepicker函数中设置：

parentEl: $(element).parent().closest('div')

这将使日历相对于输入的父div而不是正文（默认），并将与输入一起滚动。

您可能还需要一些css调整，例如父级的相对位置和未隐藏的溢出。

滚动时下拉菜单未保持在原位

2 个答案: