<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
#box {
border: 2px solid deeppink;
width: 1000px;
margin: 10px auto;
padding: 10px;
background-color: pink;
color: white;
font-size: 20px;
}
#title {
display: flex;
}
#titleFont {
line-height: 50px;
}
#titleSpace {
height: 50px;
width: 900px;
border: 1px solid deeppink;
outline: deeppink;
font-size: 20px;
color: deepskyblue;
}
#content {
display: flex;
margin-top: 20px;
}
#contentspace {
border: 1px solid deeppink;
outline: deeppink;
font-size: 20px;
height: 300px;
width: 900px;
color: seagreen;
}
#submit {
height: 30px;
width: 100px;
border: 1px solid yellow;
color: crimson;
background-color: white;
font-size: 20px;
outline: none;
cursor: pointer;
margin-left: 60px;
margin-top: 20px;
}
#text {
font-size: 25px;
}
#show {
margin-left: 55px;
margin-top: 20px;
}
li,
ul {
margin: 0;
padding: 0;
list-style-type: none;
}
li {
height: 50%;
line-height: 40px;
text-indent: 20px;
}
ul {
width: 900px;
}
</style>
</head>
<body>
<div id="box">
<div id="title">
<div id="titleFont">标题：</div>
<input type="text" id="titleSpace" />
</div>
<div id="content">
<div id="contentFont">
内容：
</div>
<textarea id="contentspace"></textarea>
</div>
<input type="button" id="submit" value="提交" />
<div id="show">
<div id="text">
爱的告白
</div>
</div>
</div>
</body>
<script type="text/javascript" src="js/tween(1).js">
</script>
<script type="text/javascript">
var btn = document.getElementById("submit");
var tSpace = document.getElementById("titleSpace");
var cSpace = document.getElementById("contentspace");
var show = document.getElementById("show");
var timer = null;
//赋点击事件
btn.onclick = function() {
var str1 = tSpace.value;
var str2 = cSpace.value;
//判断是否为空
if(str1.length == 0 || str2.length == 0) {
alert("爱的表白怎么能少了文字的点缀呢？")
} else {
var ul = document.createElement("ul");
ul.style.marginTop = 10 + "px";
ulHeight(ul);
var liTop = document.createElement("li");
liTop.style.backgroundColor = "cadetblue";
liTop.innerHTML = "❤️" + tSpace.value + "❤️";
ul.appendChild(liTop);
var liBot = document.createElement("li");
liBot.style.backgroundColor = "seagreen";
liBot.innerHTML = "❤️" + cSpace.value + "❤️";
liBot.style.position = "relative";
var a = document.createElement("a");
a.href = "#"
a.innerHTML = "删除";
a.style.position = "absolute";
a.style.right = 10 + "px";
a.onclick = function() {
ul.remove();
}
liBot.appendChild(a);
ul.appendChild(liBot);
show.appendChild(ul);
}
}
//产生高度的函数
function ulHeight(obj) {
var t = 0;
var d = 30;
var b = 0;
var c = 80;
clearInterval(timer);
timer = setInterval(function() {
t++;
if(t >= d) {
clearInterval(timer);
}
obj.style.height = Tween.Bounce.easeOut(t, b, c, d) + "px";
}, 30)
}
</script>
</html>
来源：https://www.cnblogs.com/niuniudashijie/p/6120090.html