js改变button的状态

<button id="myButton">Click Me</button>

<script>
  document.getElementById('myButton').disabled = true; // 禁用按钮
</script>

<button id="myButton" disabled>Click Me</button>

<script>
  document.getElementById('myButton').disabled = false; // 启用按钮
</script>

<button id="myButton">Click Me</button>

<script>
  var button = document.getElementById('myButton');
  button.textContent = 'Processing...'; // 改变按钮文本
</script>

<button id="myButton">Submit</button>

<script>
  function checkFormValidity() {
    var formIsValid = /* some validation logic */;
    document.getElementById('myButton').disabled = !formIsValid;
  }

  // 假设有一个表单提交事件
  document.querySelector('form').addEventListener('input', checkFormValidity);
</script>

window.onload = function() {
  setTimeout(function() {
    document.getElementById('myButton').disabled = true;
  }, 10); // 延迟10毫秒
};