CSS 代码:
这个代码用的是内部引入
<style>
*{
padding: 0;
margin: 0;
}
ul li{
list-style: none;
}
.bbs{
margin: 0 auto;
width: 600px;
position: relative;/*相对定位*/
}
header{
border-bottom: 1px solid gray;
padding: 5px 0;
}
header span{
display: inline-block;
width: 200px;
height: 50px;
color: #f9f9f9;
background-color: green;
font-size: 18px;
font-weight: bold;
text-align: center;
line-height: 50px;
border-radius: 5px;
cursor: pointer;
}
.post{
position: absolute;
left: 65px;
top: 70px;
width: 500px;
padding: 10px;
font-size: 14px;
z-index: 99;
background-color: #f9f9f9;
display: none;
}
.post .title{
width: 450px;
height: 30px;
line-height: 30px;
display: block;
border: 1px solid gray;
margin-bottom: 10px;
}
.post select{
width: 200px;
height: 30px;
}
.post .content{
width: 450px;
height: 200px;
display: block;
margin: 10px 0;
border: 1px solid gray;
}
.post .btn{
width: 160px;
height: 35px;
color: #f9f9f9;
background: #009966;
border: none;
font-size: 14px;
font-weight: bold;
text-align: center;
line-height: 35px;
border-radius: 8px;
cursor: pointer;
}
.bbs section ul li{
padding: 10px 0;
border-bottom: 1px #999999 dashed;
overflow: hidden;
}
.bbs section ul li div{
float: left;
width: 60px;
margin-left: 10px;
}
.bbs section ul li div img{
border-radius: 50%;
width: 60px;
}
.bbs section ul li h1{
float: left;
width: 520px;
font-size: 16px;
line-height: 35px;
}
.bbs section ul li p{
color: #666666;
line-height: 25px;
font-size: 12px;
}
.bbs section ul li p span{
padding-right: 20px;
}
</style>
HTML代码:
<div class="bbs">
<header>
<span onclick="post()">我要发帖</span>
</header>
<!--主体-->
<section>
<ul id="postList"> </ul>
</section>
<!--提交的表单-->
<div class="post" id="post">
<input type="text" placeholder="请输入标题(1~50个字符)"
class="title" id="title" >
所属板块:
<select id="sec">
<option>请选择板块</option>
<option>电子书籍</option>
<option>新课来了</option>
<option>清扬</option>
<option>笔记本</option>
</select>
<textarea class="content" id="content">
</textarea>
<input class="btn" value="发布"
onclick="postSuccess()">
</div>
</div>
script代码:
<script>
function post() {
document.getElementById("post").style.display="block"
}
/*发布按钮*/
var touLisL = new Array("../img/tou01.jpg","../img/tou02.jpg","../img/tou03.jpg","../img/tou04.jpg")
function postSuccess() {
//第一个 头像
//1.创建li元素
var newLi = document.createElement("li");
//2.获取0~3的随机数 floor 向下取整
var iNum = Math.floor(Math.random()*4);
//3.创建头像所在的Div节点
var newDiv = document.createElement("div");
//4.创建头像的img节点
var newImg = document.createElement("img");
//5.给img添加属性
newImg.setAttribute("src",touLisL[iNum]);
//6.将头像img 放到div中
newDiv.appendChild(newImg);
/*
标题
* */
//创建标题所在的标签h1
var titleH1 = document.createElement("h1");
//2.获取标题
var title = document.getElementById("title").value;
//3.将标题放到H1标签中
titleH1.innerHTML = title;
/*
* 板块 和 发布时间
* */
//1.创建一个p节点
var newp = document.createElement("p");
//2.创建一个span节点
var newSpan= document.createElement("span")
//3.获取板块值
var secValue = document.getElementById("sec").value;
//4.将板块放到span中
newSpan.innerHTML = "板块:"+secValue;
//5.声明当前时间
var myDate = new Date();
//6.获取时间
var currentDate = myDate.getFullYear()+"-"+parseInt(myDate.getMonth()+1)
+"-"+myDate.getDate()+" "+myDate.getHours()+":"+myDate.getMinutes();
//7.创建第二个span
var secondSpan = document.createElement("span");
//8.将时间放到span中
secondSpan.innerHTML="发表时间:"+currentDate
//9.将时间和板块插入到p标签中
newp.appendChild(newSpan);
newp.appendChild(secondSpan);
/*
* 完善li标签
* */
newLi.appendChild(newDiv);//头像
newLi.appendChild(titleH1);//标题
newLi.appendChild(newp);//包含了板块和时间的p标签
var postList = document.getElementById("postList");
//将当前内容插入到列表最前面
postList.insertBefore(newLi,postList.firstChild);
//清空标题
document.getElementById("title").value="";
//清空内容
document.getElementById("content").value="";
//将表单隐藏
document.getElementById("post").style.display="none"
}
</script>