为什么自定义错误对话框不断消失?

why Custom Error Dialog Box keeps disappearing?

我想制作一个自定义错误对话框,这是我使用的代码,但是每当我 运行 它时,它会显示一秒钟然后消失,我在这段代码中找不到问题, 谁能帮我?

HTML:

<form name="signup" action="" onSubmit="return Validation_for_SignUp" method="post">
    <h2 id = "FormTitle"> New Member? Sign up first! </h2>  
    <label>Username</label>
    <input type="text" name="username" id="name"/>
    <label>Email</label>
    <input type="text" name="email" id="email"/>
    <label>Password</label>
    <input type="password" name="password" id="password"/>                  
    <label>Confirm Password</label>                 
    <input type="password" name="cpassword" id="cpassword"/>                    
    <button id="Register"onclick="Error.render('Please check the field')"> Sign Up </button>            
</form>

JavaScript:

<script>
  function CustomError()
  {
     this.render = function (dialog)
     {
       var WinWidth = window.innerWidth;
       var WinHeight = window.innerHeight;
       var ErrorDialog = document.getElementById('ErrorDialog');
       var ErrorDialogBox = document.getElementById('ErrorDialogBox');
       ErrorDialog.style.display = "block";
       ErrorDialog.style.height = WinHeight + "px";
       ErrorDialogBox.style.left = (WinWidth/2) - (550 * .05) + "px";
       ErrorDialogBox.style.top = "100px";
       ErrorDialogBox.style.display = "block";
       document.getElementById ('DialogHead').innerHTML = "Warning!";
       document.getElementById ('DialogBody').innerHTML = dialog;
       ddocument.getElementById ('DialogFoot').innerHTML = '<button onclick = "Error.ok()"> OK </button>';
      }
      this.ok = function ()
      {
        document.getElementById('ErrorDialogBox').style.display = "none";
        document.getElementById("ErrorDialog").style.display = "none"
      }
    }
    var Error = new CustomError();
</script>

CSS:

#ErrorDialog
{
  display: none;
  opacity: .8;
  position: fixed;
  top: 0px;
  left: 0px;
  background: black;
  width: 100%;
  z-index: 10;
}
#ErrorDialogBox
{
 display: none;
 position: fixed;
 background: white;
 border-radius: 7px;
 width: 550px;
 z-index: 10;
}
#DialogHead 
{
 background: #666;
 font-size: 19px;
 padding: 10px;
 color: #CCC;
}
#DialogBody
{
 background: #333;
 padding: 20px;
 color: #FFF;
}
#DialogFoot
{
 background: #666; 
 padding: 20px;
 color: #FFF;
}

你好@wang Hee Ra _ Gogo 你的代码没有问题,除了注册按钮发布你的表单最终重新加载页面,这就是你的对话框立即消失的原因,并验证我的内容我说只是尝试 运行 你的 Error.render();通过控制台或表单外的另一个按钮运行,例如:

<a href="javascript:Error.render('Please check the field')">TEST IT</a>

单击此按钮将显示对话框,并且不会消失 因此,也许您可​​以尝试以一种不会立即提交但未发现错误的方式更改您的代码。

我希望这能回答你的问题。