Jquery 日期选择器在引导程序4上不工作

Jquery 日期选择器在引导程序4上不工作,jquery,html,datepicker,bootstrap-4,Jquery,Html,Datepicker,Bootstrap 4,我想在我的项目中使用datepicker。这是我第一次使用bootstrap。问题是,当我单击日期表单时,datepicker没有显示。我已经尝试替换CDN url位置的内部和内部标记,但仍然没有工作。我不知道我犯了什么错误,希望你们能帮助我解决这个问题。谢谢 <!DOCTYPE html> <html lang="en"> <head> <!-- Required meta tags --> <meta charset="utf-

我想在我的项目中使用datepicker。这是我第一次使用bootstrap。问题是,当我单击日期表单时,datepicker没有显示。我已经尝试替换CDN url位置的内部和内部标记,但仍然没有工作。我不知道我犯了什么错误,希望你们能帮助我解决这个问题。谢谢

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

<head>
  <!-- Required meta tags -->
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

  <!-- Bootstrap CSS -->
  <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">

  <!-- datepicker -->
  <link rel="stylesheet" href="https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
  <link rel="stylesheet" href="/resources/demos/style.css">
  <script src="https://code.jquery.com/jquery-1.12.4.js"></script>
  <script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
  <script>
    $(function() {
      $("#datepicker").datepicker();
    });
  </script>
</head>

<body>
  <nav class="navbar navbar-toggleable-md navbar-inverse bg-inverse">
    <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarsExampleDefault" aria-controls="navbarsExampleDefault" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
      </button>
    <a class="navbar-brand" href="#">Menu</a>
    <div class="collapse navbar-collapse" id="navbarsExampleDefault">
      <ul class="navbar-nav mr-auto">
        <li class="nav-item dropdown">
          <a class="nav-link dropdown-toggle" href="http://example.com" id="dropdown01" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Management</a>
          <div class="dropdown-menu" aria-labelledby="dropdown01">
            <a class="dropdown-item" href="dashboard.php?act=create_program">Create Program</a>
            <a class="dropdown-item" href="dashboard.php?act=view_program">View Program</a>
          </div>
        </li>
      </ul>
    </div>
  </nav>
  <div class="container-fluid">
    <div class="row">
      <div class="col-md-4"></div>
      <div class="col-md-4">
        <!-- Datepicker -->
        Date: <input type="text" id="datepicker">
      </div>
      <div class="col-md-4"></div>
    </div>
  </div>
  <!-- jQuery first, then Tether, then Bootstrap JS. -->
  <script src="https://code.jquery.com/jquery-3.1.1.slim.min.js" integrity="sha384-A7FZj7v+d/sdmMqp/nOQwliLvUsJfDHW+k9Omg/a/EheAdgtzNs3hpfag6Ed950n" crossorigin="anonymous"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js" integrity="sha384-DztdAPBWPRXSA/3eYEEUWrWCy7G5KFbe8fFjk5JAIxUYHKkDx6Qin1DkWx51bBrb" crossorigin="anonymous"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js" integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn" crossorigin="anonymous"></script>
</body>

</html>

$(函数(){
$(“#日期选择器”).datepicker();
});
日期:
我认为您也应该添加'popper.js'文件,因为Bootstrap 4 popup元素依赖于PopperJ


您两次导入jQuery(1.12.4和3.1.1)。删除v1.12.4并将jquery-ui.js移到底部(在jquery 3.1.1之后)。

您的代码运行良好,但需要更改格式。并且底部源代码中存在问题

jquery冲突问题

$(函数(){
$(“#日期选择器”).datepicker();
} );

日期:
我已经检查了您上面的代码。如果您的项目中还有两个
Javascripts
,请从代码中删除这些redundent
javascript

删除这些javascript

 <script src="https://code.jquery.com/jquery-3.1.1.slim.min.js" integrity="sha384-A7FZj7v+d/sdmMqp/nOQwliLvUsJfDHW+k9Omg/a/EheAdgtzNs3hpfag6Ed950n" crossorigin="anonymous"></script>
        <script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js" integrity="sha384-DztdAPBWPRXSA/3eYEEUWrWCy7G5KFbe8fFjk5JAIxUYHKkDx6Qin1DkWx51bBrb" crossorigin="anonymous"></script>

日期: