Question

＆＃13;

function add() {
  var students = [{
    name: document.getElementById('nam').value,
    id: document.getElementById('ied').value,
    grade: document.getElementById('gr').value,
  }]
  document.ARR.Name.value = " ";
  document.getElementById("gr").value = " ";
  document.getElementById("ied").value = " ";


  i = i + 1;
  if (i == 5) {
    alert("Max capacity reached")
  }
}

＆＃13;

<html>

<body>
  Name: <input type="text" name="Name" id="nam" /></br>
  </br>
  Grade:<input type="text" name "Mark" id="gr" /> </br>
  </br>
  ID: <input type="text" name "ID" id="ied" /> </br>
  </br>
  <input type="button" value="Add" onclick="add()" />
</body>

</html>

＆＃13;

大家好，我试图从表单中获取信息并将它们放在一个对象数组中。这段代码不起作用

Answer 1

我认为您尝试使用document.ARR.Name作为对第一个输入字段的引用，但事实并非如此。只需通过getElementById选择它。

＆＃13;

function add() {
  var students = [{
    name: document.getElementById('nam').value,
    id: document.getElementById('ied').value,
    grade: document.getElementById('gr').value,
  }];

  document.getElementById('nam').value = " ";
  document.getElementById("gr").value = " ";
  document.getElementById("ied").value = " ";


  /**i = i + 1;
  if (i == 5) {
    alert("Max capacity reached")
  }*/ // I'm not sure what this is supposed to do, so I simply wrapped it in a comment, since it throws an error
}

＆＃13;

<html>

<body>
  Name: <input type="text" name="Name" id="nam" /></br>
  </br>
  Grade:<input type="text" name "Mark" id="gr" /> </br>
  </br>
  ID: <input type="text" name "ID" id="ied" /> </br>
  </br>
  <input type="button" value="Add" onclick="add()" />
</body>

</html>

＆＃13;

输入信息的对象数组

1 个答案: