本文实例为大家分享了JavaScript实现留言板功能的具体代码，供大家参考，具体内容如下
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>留言板</title>
<style type="text/css">
#div1{
width: 400px;
height: 200px;
background-color: antiquewhite;
}
span{
color: blue;
text-decoration: underline;
}
</style>
</head>
<body>
<div id="div1">
姓名：<input type="text" name="user" id="username" /><br />
内容：<textarea rows="10" cols="40" id="info">
</textarea>
<input type="button" value="留言" id="btn" /><br />
</div>
<h3>留言板</h3><br />
<div id="div2">
</div>
</body>
<script type="text/javascript">
var userInput = document.getElementById("username");
var infoInput = document.getElementById("info");
var btn = document.getElementById("btn");
var div2 = document.getElementById("div2");
btn.onclick = function(){
var user = userInput.value;
var info = infoInput.value;
var divUser = document.createElement("div");
divUser.innerText = user;
divUser.style.backgroundColor = "darkgrey";
divUser.style.width = "400px";
divUser.style.height = "30px";
div2.appendChild(divUser);
var divInfo = document.createElement("div");
divInfo.innerText = info;
divInfo.style.backgroundColor = "antiquewhite";
divInfo.style.width = "400px";
divInfo.style.height = "80px";
div2.appendChild(divInfo);
var del = document.createElement("span");
del.innerText = "删除";
del.style.float = "right";
divInfo.appendChild(del);
del.onclick = function(){
divUser.remove();
divInfo.remove();
del.remove();
}
}
</script>
</html>
showtime：
点击删除，可以删除留言：
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。