Question

我会在html id处显示值列表数组为什么控制台告诉我show是null并且dosent显示它们？！

<script>
  var howMany = prompt("how many do you want to buy?");
  var goods = "";
  var list = [];
  for (var i = 0 ; i < howMany ; i++){
      goods = prompt("add a name ?");
      list.push(goods);
  }

  var show = document.getElementById("des");
  show.innerText = list;

Answer 1

可能是由于获取DOM中不存在的“元素”而导致的。在您的正文标记后调用您的Javascript代码。 e.g

<body>

<div id="des"></div>

</body>


<script>
  var howMany = prompt("how many do you want to buy?");
  var goods = "";
  var list = [];
  for (var i = 0 ; i < howMany ; i++){
  goods = prompt("add a name ?");
  list.push(goods);

}

  var show = document.getElementById("des");
  show.innerText = list;
</script>

Answer 2

  var howMany = prompt("how many do you want to buy?");
  var goods = "";
  var list = [];
  for (var i = 0 ; i < howMany ; i++){
  goods = prompt("add a name ?");
  list.push(goods);
  }
 var show = document.getElementById("des");
  show.innerText = list;

<div id="des"></div>

试试这个

javascript：dosent在html中显示数组

2 个答案: