在 HTML 表单中添加一个输入字段会导致它下面的所有内容都采用它的属性

Question

我有这个 HTML CSS 组合来制作登录表单：

<!DOCTYPE html>
<html lang="en" dir="ltr">
  <head>
    <meta charset="utf-8">
    <title>Hold your horses...</title>
    <link href="https://fonts.googleapis.com/css2?family=Montserrat:wght@300&display=swap" rel="stylesheet">
    <link rel="stylesheet" href="style.css">
  </head>
  <body>

<form class="box" action="/users/login" method="POST">
  <h1>Woah...</h1>
  <h2>You'll need to be logged in to do that</h2>
  <input type="text" id="username" name="username" placeholder="Username">
  <input type="password" id="password" name="password" placeholder="Password">
  <input type="submit" id="submit" name="" value="Login">
</form>

  </body>
</html>

style.css:

body{
  margin: 0;
  padding: 0;
  font-family: sans-serif;
  background: #191919;
}
.box{
  width: 300px;
  padding: 40px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  background: #191919;
  text-align: center;
}
.box h1{
  color: white;
  font-family: 'Montserrat', sans-serif;
  text-transform: uppercase;
  font-weight: 500;
}

.box h2{
  color: white;
  font-family: 'Montserrat', sans-serif;
  font-weight: 100;
  font-size: medium;
}
.box input[type = "text"],.box input[type = "password"]{
  border:0;
  background: none;
  display: block;
  margin: 20px auto;
  text-align: center;
  border: 2px solid #3498db;
  font-family: 'Montserrat', sans-serif;
  padding: 14px 10px;
  width: 200px;
  outline: none;
  color: white;
  border-radius: 24px;
  transition: 0.25s;
}
.box input[type = "text"]:focus,.box input[type = "password"]:focus{
  width: 280px;
  border-color: #2ecc71;
}

.box input[type = "submit"], input[id = "submit"]{
  border:0;
  background: none;
  display: block;
  font-family: 'Montserrat', sans-serif;
  margin: 20px auto;
  text-align: center;
  border: 2px solid #2ecc71;
  padding: 14px 40px;
  outline: none;
  color: white;
  border-radius: 24px;
  transition: 0.25s;
  cursor: pointer;
}
.box input[type = "submit"]:hover, input[id = "submit"]:hover{
  background: #2ecc71;
}

产生这个：

但是，当我向我的 html 表单添加一个附加字段时（它被隐藏，因为它是一个重定向 link 并且不需要用户输入）：

<form class="box" action="/users/login" method="POST">
  <h1>Woah...</h1>
  <h2>You'll need to be logged in to do that</h2>
  <input type="text" id="username" name="username" placeholder="Username">
  <input type="password" id="password" name="password" placeholder="Password">
  <input type="hidden" id="redirectURL" name="redirectURL" placeholder="" value=<%=redirectURL%> // <--- new line
  <input type="submit" id="submit" name="" value="Login">
</form>

它会导致其下方的所有内容（在本例中为提交按钮）消失并带有其 'hidden' 属性。

如何解决？

Answer 1

input 元素缺少结束标记。这可以通过使用来解决：

<input type="hidden" id="redirectURL" name="redirectURL" placeholder="" value=<%=redirectURL%>>

Answer 2

您忘记关闭隐藏的输入元素。

在 value=<%=redirectURL%> 之后添加一个额外的 >。

在 HTML 表单中添加一个输入字段会导致它下面的所有内容都采用它的属性

Adding an input field in a HTML form causes everything below it to take it's attributes

html

css

ejs

node.js