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index.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>JS评论留言发布表单代码 - A5源码 </title>
<style type="text/css">
*{margin:0;padding: 0;}
.wrap{
width:780px;
height: 880px;
margin:0 auto;
box-shadow: 10px 10px 30px #ccc;
border-radius: 2px;
padding: 10px;
position: relative;
top: 50px;
}
.says{
width:780px;
height: 200px;
position: absolute;
}
.says h1{
font-size:18px;
color:#A8A8A8;
margin-bottom: 5px;
}
textarea{
width:760px;
height: 100px;
outline: none;
resize: none;
border:1px solid #ccc;
border-radius: 3px;
padding: 5px;
color:#660000;
}
input{
width:100px;
height: 30px;
border:none;
cursor: pointer;
background: #00CC66;
color:white;
border-radius: 2px;
position: absolute;
right: 10px;
bottom: 5px;
transition: all ease 0.4s;
font-size: 16px;
}
input:hover{
filter:alpha(opaciyt:70);
opacity: 0.7;
}
ul{
width:750px;
height: 640px;
position: absolute;
bottom: 0;
overflow-x: hidden;
overflow-y: scroll;
}
li{
width:750px;
border-bottom: 1px dotted #ccc;
list-style:none;
line-height: 57px;
font-size: 14px;
color:#606060;
overflow: hidden;
filter: alpha(opacity:0);
opacity: 0;
}
span{
float: right;
margin-right: 30px;
}
.errmsg{
font-size: 14px;
color:red;
font-weight: bold;
filter: alpha(opacity:0);
opacity:0;
}
a{
font-size: 14px;
color:#990000;
text-decoration: none;
margin-left: 10px;
}
a:hover{
color:red;
text-decoration: underline;
}
</style>
</head>
<body>
<div class="wrap">
<div class="says">
<h1>来，说说你在做什么，想什么...</h1>
<textarea>请点击发布试试吧</textarea><input type="button" value="发布">
<div class="errmsg">请填写内容后再发布！</div>
</div>
<ul>
</ul>
</div>
<script>
window.onload=function()
{
var oWrap=document.getElementsByClassName("wrap")[0];
var oTextarea=oWrap.getElementsByTagName("textarea")[0];
var oBtn=oWrap.getElementsByTagName("input")[0];
var oUl=oWrap.getElementsByTagName("ul")[0];
var errMsg=oWrap.getElementsByClassName("errmsg")[0];
var oA=document.getElementsByTagName("a");
//console.log(oA);
var t=new Date();
var Year=t.getFullYear();
var Month=t.getMonth()+1;
var Day=t.getDate();
var Hours=t.getHours();
var Minutes=t.getMinutes();
var Scondes=t.getSeconds();
var timers=toString(Year)+"年"+toString(Month)+"月"+toString(Day)+"日"+toString(Hours)+":"+toString(Minutes)+":"+toString(Scondes);//将获取到的日期对象拼接。
//console.log(timers);
function toString(n)//数字转字符串
{
if(n<9)
{
n="0"+n;
}
else
{
n=""+n;
}
return n;
};
oBtn.onclick=function()
{
if(oTextarea.value=="")
{
startMove(errMsg,{opacity:100});
//console.log(errMsg.style.opacity)
oTextarea.select();
}
else
{
var aLi=document.createElement("li");
var aSpan=document.createElement("span");
//console.log(aLi);
//console.log(aSpan);
//oUl.appendChild(aLi);
//aLi.appendChild(aSpan);
aLi.innerHTML=oTextarea.value;
aSpan.innerHTML=timers+"<a href='javascript:;' title='删除这条信息'>删除</a>";
//aSpan.innerHTML="<a href='javascript:;'>删除</a>"
if(oUl.children.length>0)
{
oUl.insertBefore(aLi,oUl.children[0]);
aLi.appendChild(aSpan);
oTextarea.value="";
}
else
{
oUl.appendChild(aLi);
aLi.appendChild(aSpan);
oTextarea.value="";
};
var aLiHeight=parseInt(getStyle(aLi,"height"));
//console.log(aLiHeight);
aLi.style.height="0";
startMove(aLi,{height:aLiHeight},function(){
startMove(aLi,{opacity:100});
});
delLi();//添加数据后加载删除模块
}
};
function delLi()
{
for(var i=0;i<oA.length;i++)
{
oA[i].onclick=function()
{
liNode=this.parentNode.parentNode//获取到当前A标签的父节点，也就是LI
var aLiHeight=parseInt(getStyle(liNode,"height"))+1;
//console.log(aLiHeight);
//链式运动操作：先进行透明化，再进行高度变小，最后删除DOM元素
startMove(liNode,{opacity:0},function(){
startMove(liNode,{height:0},function(){
oUl.removeChild(liNode);
});
});
}
}
}
};
//运动框架
function startMove(obj,json,endFn){
clearInterval(obj.timer);
obj.timer=setInterval(
function(){
var iStop=true;
for(var curr in json)
{
var oNumber=0;
if(curr=="opacity")
{
oNumber=Math.round(parseFloat(getStyle(obj,curr))*100);
}
else
{
oNumber=parseInt(getStyle(obj,curr));
}
var speed=(json[curr]-oNumber)/6;
speed=speed>0?Math.ceil(speed):Math.floor(speed);
if(oNumber!=json[curr])
iStop=false;
if(curr=="opacity")
{
obj.style.filter="alpha(opacity:"+(oNumber+speed)+")";
obj.style.opacity=(oNumber+speed)/100;
}
else
{
obj.style[curr]=oNumber+speed+"px";
}
};
if(iStop)
{
clearInterval(obj.timer);
if(endFn)endFn();
}
},30);
};
//获取非行间样式
function getStyle(obj,name)
{
if(obj.currentStyle)
{
obj=currentStyle[name];
}
else
{
obj=getComputedStyle(obj,false)[name];
}
return obj;
};
</script>
<div style="text-align:center;margin:100px 0; font:normal 14px/24px 'MicroSoft YaHei';">
</div>
</body>
</html>