​x
 
<!DOCTYPE html>
<html>
<body>
​
获取文件：<input type="file" id="myFile" disabled>
​
<p>单击下面的按钮可查看上面的文件上传按钮是否被禁用。</p>
​
<button onclick="myFunction()">试一试</button>
​
<p id="demo"></p>
​
<script>
function myFunction() {
  var x = document.getElementById("myFile").disabled;
  document.getElementById("demo").innerHTML = x;
}
</script>
​
</body>
</html>
​