如何使用JavaScript显示用户输入的信息?

时间:2013-04-21 19:49:51

标签: javascript html document.write

我有一个表格代码,允许用户输入信息。我正在尝试使用javascript将该信息的某些部分显示在新页面上。基本上,该页面旨在让用户输入信息,并在新的选项卡或页面中显示名称,日期,时间和电子邮件。但我似乎无法展示它。任何人都可以帮助我吗?

<html lang="en" >
    <head>
    <title>Shy Music Booking Confirmation</title>
    <link rel="stylesheet" href="music.css" type="text/css" />

<body>
<div id="wrapper">
<div id="form">
    <header><h1>Shy Music Private Lessons</h1></header>

<script type="text/javascript">

      function addtext()
      {
         var userName = document.booking.userName.value;
         var userDate = document.booking.userDate.value;
         var userTime = document.booking.userTime.value;
         var userEmail = document.booking.userEmail.value;

         document.writeln("Thank you! You have just entered the following:");
         document.writeln("<pre>");
         document.writeln("Name: " + userName);
         document.writeln("Date: " + userDate);
         document.writeln("Time: " + userTime);
      }
    </script>
</head>
<hr>
<form name="booking">
<h1>Book a Slot Here!</h1>
    <label for="userName">Name: <br><input type = "text" name = "userName"></label>      <br><br>
    <label for="userEmail">E-mail Address: <br><input type = "email" name = "userEmail"></label><br><br>
<label for="userPhone">Phone Number: <br><input type = "tel" name = "userPhone">    </label><br><br>
<label for="userInstrument">Instrument: 
<select>
<option>Guitar</option>
<option>Drums</option>
<option>Piano</option>
</select>
</label>
<br><br>
<label for="userTime">
Preffered Time: 
<select>
<option>9:00</option>
<option>9:30</option>
<option>10:00</option>
<option>10:30</option>
<option>11:00</option>
<option>11:30</option>
<option>12:00</option>
<option>12:30</option>
<option>1:00</option>
<option>1:30</option>
<option>2:00</option>
<option>2:30</option>
<option>3:00</option>
<option>3:30</option>
<option>4:00</option>
<option>4:30</option>
</select>
</label>
<select>
<option>AM</option>
<option>PM</option>
</select>
<br>
<br>
    <label for="userDate">Date: <br><input type = "date" name = "userDate"></label><br><br>

<input type="submit" value="Submit" >
<form action="#">
<input type="button" value = "Back" onclick="javascript:history.go(-1)" />
</form>
</form>
</div>
</div>
</body>
</html>

2 个答案:

答案 0 :(得分:2)

我花了很多时间在做这个,但是没有用。但是,我最近尝试了一下,并且有效!我希望这会有所帮助。

<html>
<head>
<h1> Welcome</h1>
</head>
<body>
<p> Enter name: </p>
<input id="name" name="name"class="Name" type="text" placeholder="Enter Full name" required>`
<input type="Submit" onclick="submitted()"> <br> <br>
<a id="new" href="www.google.com"> </a>
<script>

      function submitted()
      {
        var a = document.getElementById("name").value;

        if (a=="")
        {
      document.getElementById("new").innerHTML="";
        }
        else if (a==" ") {
        document.getElementById("new").innerHTML=""
        }
        else
        {
          document.getElementById("new").innerHTML="Thank you, " + a + ". " + "Click here to continue.";
        }
      }
</script>
</body>
</html>

或者稍微收紧,作为工作片段:

function submitted()
{
   var a = document.getElementById("name").value.trim();
   document.getElementById("new").innerHTML=
     a===""?"":"Thank you, " + a + ". " + "Click here to continue.";
}
<p> Enter name: </p>
    <input id="name" name="name"class="Name" type="text" placeholder="Enter Full name" required>
    <input type="Submit" onclick="submitted()"> <br> <br>
    <a id="new" href="www.google.com"> </a>

答案 1 :(得分:0)

您的代码存在的问题是您在动态设置中使用document.write。在此上下文中使用它时,document.write将删除当前文档的内容并将其替换为其参数指定的文本。出于这个原因,document.write通常被认为是表示和插入文本/数据的不良方式。它通常会影响学习JavaScript的过多初学者。以下是您应该记住的一些替代方案:

  • element.innerHTML:就像我在评论中所说的那样。使用.innerHTML通过页面上的元素将格式化的HTML插入到文档中。它不一定必须由id属性指定。任何其他形式的元素获取都可以很好地给出它。

  • node.appendChild:此方法比第一种方法更适合DOM。它允许您在node指定的元素的主体末尾插入节点。例如:

    var form = document.myForm,
        new_element = document.createElement('input');
    
    new_element.type = "button";
    new_element.value = "Submit";
    
    form.appendChild( new_element );
    

我希望这会有所帮助。