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*{padding: 0;margin: 0;border: 0;text-decoration: none;}
.title{width: 1000px;height: 80px;background: #2b669a;margin: auto; color: #ffffff;}
.title h2{line-height: 80px;text-align: center;width: 920px;float: left;}
.title span{float: left;width: 80px;line-height: 80px;font-size: 12px;}
#contents{ width: 1000px;background:#9acfea;margin: auto;}
#contents .box{display:none;height: 150px;border-bottom: 1px dashed #ffffff;}
#contents .box .div01{width: 50px;text-align: center;float: left;line-height: 150px;}
#contents .box .tit{width: 80px;height: 80px;float: left;margin: 30px;}
#contents .box .tit img{width: 80px;height: 80px;}
#contents .box .main{width: 100px;height: 100px;float: left;margin-top: 30px;line-height: 40px;}
#contents .box .div02{font-size: 12px;width: 240px;height: 100px;float: right;line-height: 40px;margin-top: 30px;}
.title1{width: 1000px;height: 80px;background: #2b669a;margin: auto;color: #ffffff;}
.title1 span{float: left;width: 80px;line-height: 80px;font-size: 12px;}
.title1 h2{line-height: 80px;text-align: center;width: 920px;float: left;}
.message{width: 1000px;margin: auto;line-height:30px;background:#9acfea;height: 220px;}
.message .nav{width: 400px;margin-left: 400px;}
#img img{width:50px;height: 50px;}
.border{border: 1px solid crimson;}
.red{color:red;}
.border{border: 1px solid red;}js
function f(obj,text) {
obj.nextSibling.innerHTML=text;
obj.nextSibling.style.color="#000";
obj.nextSibling.style.fontSize=12+'px';
}
function f1(obj) {
obj.nextSibling.innerHTML=" ";
}
//发布留言
var i = 0;
//i 为 box 的 id
var j = 0;
//j是一共有多少个楼，删除后的用它接收
var q =1;
function f2() {
var name = document.getElementById("name");
var main = document.getElementById("textarea");
var box = document.getElementById("box");
var contents = document.getElementById("contents");
var step = document.getElementById("step");
var pic1 =document.getElementById("pic1");
if (name.value == "") {
name.nextSibling.innerHTML="*必须填写用户名!";
name.nextSibling.style.color="red";
name.nextSibling.style.fontSize=10+'px';
}else if(main.value == ""){
main.nextSibling.innerHTML="必须填写内容";
main.nextSibling.style.color="red";
main.nextSibling.style.fontSize=10+'px';
}else if(q==1){
//选择头像
pic1.innerHTML="必须选中一个头像！";
pic1.style.color="red";
pic1.style.fontSize=10+"px";
}else {
//楼层
var div = box.cloneNode(true);
div.style.display="block";
i++;
j++;
div.id="box"+i;
var child = div.getElementsByTagName("div");
//获取克隆出来div里面的小div
child[0].innerHTML=i+"楼";
child[3].innerHTML="姓名："+name.value;
child[4].innerHTML="内容："+main.value;
step.innerHTML="一共有（"+ j +"）楼";
child[7].innerHTML="发布时间"+oTime();
contents.appendChild(div);
}
}
//发布时间的时间
function oTime() {
var date = new Date();
var year = date.getFullYear();
var month = date.getMonth()+1;
var date1 = date.getDate();
var day = date.getDay();
var hour = date.getHours();
var minutes = date.getMinutes();
var second = date.getSeconds();
if(day === 0){
day = "日";
}else if(day == 1){
day = "一";
}else if(day == 2){
day = "二";
}else if(day == 3){
day = "三";
}else if(day == 4){
day = "四";
}else if(day == 5){
day = "五";
}else if(day == 6){
day = "六";
}
return year+"年"+month+"月"+date1+"日"+hour+"："+minutes+"："+second+"星期"+day;
}
//删除
function del(obj) {
var step = document.getElementById("step");
j--;
step.innerHTML="一共有（"+ j +"）楼";
//删除后一共有多少楼
var contents = document.getElementById("contents");
var p =obj.parentNode.parentNode.parentNode;
//removeChild(p)表示把p删掉
contents.removeChild(p);
}
//点赞
function praise(obj,t) {
t++;
var parent1 = obj.parentNode;
parent1.innerHTML='删除|' +
'点赞（'+ t +'）';
}
//选择头像
function f3() {
var img = document.getElementById("img");
var pic = img.getElementsByTagName("img");
var box = document.getElementById("box");
var img1= box.getElementsByTagName("img");
for(var a =0; a上述内容就是使用JavaScript怎么实现一个留言板功能，你们学到知识或技能了吗？如果还想学到更多技能或者丰富自己的知识储备，欢迎关注创新互联行业资讯频道。
名称栏目：使用JavaScript怎么实现一个留言板功能
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