这篇文章主要介绍了如何使用js编写留言板，具有一定借鉴价值，感兴趣的朋友可以参考下，希望大家阅读完这篇文章之后大有收获，下面让小编带着大家一起了解一下。
具体内容如下
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
*{
margin:0px;
padding: 0px;
font-size: 12px;
}
.tie{
width: 70px;
height: 30px;
background:pink;
border-radius: 10%;
}
.an{
width: 70px;
height: 30px;
background:pink;
border-radius: 10%;
}
.allFather{
position: fixed;
left: 250px;
top: 0px;
border:1px solid gray;
width: 300px;
height: 300px;
}
.wenb{
width: 260px;
height:25px;
margin-top: 10px;
margin-left: 10px;
color: gray;
}
.two{
margin-top: 10px;
margin-left: 10px;
}
.jj{
width: 120px;
height: 25px;
}
.kk{
margin-top: 10px;
margin-left: 10px;
width: 260px;
}
.an{
margin-top: 10px;
margin-left: 10px;
}
</style>
</head>
<body>
<button class="tie">我要发帖</button>
<ul class="items"></ul>
<div class="allFather" >
<input type="text" value="请输入标题(1-60个字符)" class="wenb">
<div class="two">
所属板块
<select name="" id="wyd" class="jj">
<option value="">英雄联盟</option>
<option value="">穿越火线</option>
<option value="">qq飞车</option>
<option value="">地下城与勇士</option>
<option value="">逆战</option>
</select>
</div>
<textarea name="" id="" cols="30" rows="10" class="kk"></textarea>
<button "cz()" class="an">发布</button>
</div>
</body>
<script type="text/javascript">
//点击时使发帖界面显示
var tie = document.getElementsByClassName('tie')[0];
tie.onclick = function(){
document.getElementsByClassName('allFather')[0].style.display = "block";
}
//获得节点上传
var bt = document.getElementsByClassName("wenb")[0];//获得标题
var bk = document.getElementById('wyd');//获得板块
var jio = document.getElementsByClassName('kk')[0];//获得多行文本框内容
var time = new Date();//获得时间
var nian = time.getFullYear();//获得年份
var dt = time.getMonth();//获得月份
var r = time.getDate();//获得日期
var shi = time.getHours();//获得小时
var fen = time.getMinutes();//获得分钟
//实现上传
var items = document.getElementsByClassName('items')[0];//获得ul的节点属性
//实现创造新节点
//焦点聚集事件
bt.onfocus = function(){
bt.value = "";
}
function cz(){
//先创建li的节点
var Li = document.createElement('li');
//然后插入到ul中
items.appendChild(Li);
Li.style.listStyle = "none";
//创建图片
var img = document.createElement('img');
Li.appendChild(img);//在li中插入图片
var isz = ['../images/sdg.jpg','../images/dfggfhs.jpg'];//一个图片的数组
var index = Math.floor(Math.random()*2);
img.style.width = "50px";
img.style.height = "50px";
img.style.borderRadius = "50%";
img.setAttribute('src',isz[index]);
//创建图片右边内容的大盒子
var hfather = document.createElement('div');
Li.appendChild(hfather);//插入大盒子
//实现盒子左浮动
hfather.style.display = "inline-block";
//创建标题
var libt = document.createElement('p');
hfather.appendChild(libt);
libt.style.fontSize = "20px";
libt.style.color = "black";
libt.style.fontWeight = "bloder";
libt.style.marginBottom = "5px";
libt.innerHTML = bt.value;//填充内容
//创建板块
var text = "";
for(i = 0;i < bk.length; i++) {//下拉框的长度就是它的选项数.
if(bk[i].selected == true) {
text = bk[i].innerHTML;//获取当前选择项的值.
}
}
var bkl = document.createElement('span');
hfather.appendChild(bkl);
bkl.style.color = "gray";
bkl.innerHTML = "板块:" + text;
console.log(bkl.innerHTML);
//创建时间板块
var tbk = document.createElement('span');
hfather.appendChild(tbk);
tbk.style.marginLeft = "15px";
tbk.style.color = "gray";
tbk.innerHTML = "发表时间:" + nian + "-" + (dt+1) + "-" + r + " " + shi + ":" + fen;
document.getElementsByClassName('allFather')[0].style.display = "none";
bt.value = "请输入标题(1-60个字符)";
jio.value = "";
bk[0].selected = true;
}
</script>
</html>感谢你能够认真阅读完这篇文章，希望小编分享的“如何使用js编写留言板”这篇文章对大家有帮助，同时也希望大家多多支持编程网，关注编程网行业资讯频道，更多相关知识等着你来学习!
