javascript - 隐藏和显示 onclick 功能

Question

我的功能运行良好。但是我似乎无法在使用 onclick 功能时隐藏按钮或显示新按钮。

示例:

  var download = document.getElementById('download');
  function RemoveDoc(Doc)
  {
xmlhttp=new XMLHttpRequest();
xmlhttp.open("GET","functions/remove.php?Doc="+Doc,true);
xmlhttp.onreadystatechange=function()
{
    if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {

        download.syle.visibility='hidden';
        download.style.display ='none'
        document.getElementById("RemoveMsg").innerHTML= xmlhttp.responseText;
    }
}
xmlhttp.send();

    return false;

我的表单

   //I tried to add in the download button to be hidden here but still invalid
   <input type="submit" id="remove" name="Name" value="Remove" onclick="return RemoveDoc(this.value); document.getElementById('download').style.visibility='hidden'; return false;" />
   <input type="submit" id="download" value="download"/> //want to hide this button.
   <input type="file" id="reupload"/> //want to show this.

我试过 display = 'none' 也无效，因为我的下载在函数调用成功后消失。请多多指教

Answer 1

download.style.visibility='hidden';