禁用和启用文本域 - 在线编辑器

          姓: <input type="text" id="myText" value="Mickey"><br>
<button onclick="disableTxt()">禁用文本域</button>
<button onclick="undisableTxt()">启用文本域</button>
<script>
  function disableTxt() {
    document.getElementById("myText").disabled = true;
  }

  function undisableTxt() {
    document.getElementById("myText").disabled = false;
  }
</script>
        