Question

我仍在学习javascript，需要一点帮助。我得到的是undefined而不是我自己的字符串，有人可以告诉我我的代码有什么问题。预先感谢。

我的代码：

const logoData = [


  {
    name: "Arizona Cardinals",
    sport: "Football"
  },
  {
    name: "Atlanta Falcons",
    sport: "Football"
  }

];

document.getElementById("library").innerHTML = `
${logoData.map(function(logo) {
    return `
<div class="card" style="width: 18rem;">
  <div class="card-body">
    <h5 class="card-title">${logoData.name}</h5>
  </div>
</div>
`
}).join('')}`

<head>
  <meta http-equiv="content-type" content="text/html; charset=utf-8" />
  <!--Bootstrap style-->
  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
  <!--Bootstrap scripts-->
  <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
  <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>

</head>

<body>
  <div id="library"></div>
</body>

Answer 1

在map回调中，您要使用的变量称为logo：

<h5 class="card-title">${logo.name}</h5>

JSON值未定义？

1 个答案: