效果如下：
HTML代码：
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<link rel="stylesheet" href="css/reset.css"/>
<link rel="stylesheet" href="css/common.css"/>
</head>
<body id="body">
<div class="main">
<span>你想对楼主说点什么</span>
<span class="tag">你最多可以输入30个字符</span>
<textarea id="text" cols="30" rows="10" maxlength="30" class="text"></textarea><br>
<input type="button" value="发 表" id="ipt">
<div id="txt" >
</div>
</div>
</body>
</html>
<script src="js/xml.js"></script>
<script src="js/common.js"></script>
reset.css
html{font-family:"微软雅黑",Arial,sans-serif}
body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,form,fieldset,input,button,textarea,p,th,td,span{padding:0;margin:0;font-family:Microsoft YaHei,sans-serif,Arial}
table{border-collapse:collapse;border-spacing:0}
fieldset,img{border:0}
a{text-decoration:none;color:#000;outline:none}
li{list-style:none}
caption,th{text-align:left}
h1,h2,h3,h4,h5,h6{font-size:100%;font-weight:normal}
input,button,textarea,select,optgroup,option{font-family:inherit;font-size:inherit;font-style:inherit;font-weight:inherit}
input,button,textarea,select{*font-size:100%}
a{-webkit-transition:all 0.5s linear;-moz-transition:all 0.5s linear;-ms-transition:all 0.5s linear;-o-transition:all 0.5s linear}
.fix:after{content:'clear';clear:both;display:block;height:0;overflow:hidden;visibility:hidden;}
.fix{zoom:1;}
common.css
.main{
width: 800px;
margin:20px auto;
}
span{
display: inline-block;
width: 200px;
height: 25px;
line-height: 25px;
vertical-align: center;
text-align: left;
margin-bottom: 10px;
}
.tag{
font-size: 13px;
margin-left: 370px;
vertical-align: bottom;
text-align: center;
margin-bottom: 0;
}
.text{
width: 750px;
height: 180px;
margin:0 auto;
resize:none;
}
input{
display: inline-block;
width: 80px;
height: 50px;
background: #E2526F;
border: 0;
margin-left: 670px;
margin-top: 10px;
}
.creatediv{
width: 675px;
height: 80px;
border: 1px solid gray;
position: relative;
margin-top: 10px;
padding-left: 75px;
}
.createinput{
width: 80px;
height: 30px;
position:absolute;
right: 5px;
bottom:5px;
}
.createimg{
width: 50px;
height: 50px;
position: absolute;
top: 15px;
left: 15px;
}
.createdivs{
width:600px;
height:50px;
position: absolute;
top: 15px;
left: 85px;
}
xml.js
function get_previousSibling(n) {
y=n.previousSibling;
while (y.nodeType!=1) {
y=y.previousSibling;
}
return y;
}
function get_nextSibling(n) {
y=n.nextSibling;
while (y.nodeType!=1) {
y=y.nextSibling;
}
return y;
}
function get_lastChild(n) {
y=n.lastChild;
while (y.nodeType!=1) {
y=y.previousSibling;
}
return y;
}
function get_firstChild(n) {
y=n.firstChild;
while (y.nodeType!=1) {
y=y.nextSibling;
}
return y;
}
// Trim() , Ltrim() , RTrim()
String.prototype.Trim = function(){
return this.replace(/(^\s*)|(\s*$)/g, "");
}
String.prototype.LTrim = function(){
return this.replace(/(^\s*)/g, "");
}
String.prototype.RTrim = function() {
return this.replace(/(\s*$)/g, "");
}
common.js
var ipt = document.getElementById("ipt");
var txt = document.getElementById('txt');
var textarea = document.getElementById("text");
ipt.onclick = function(){
var textValue = textarea.value.LTrim();
textarea.value="";
if(textValue.length>0 ){
var divs = document.createElement("div");
var imgs = document.createElement("img");
var ps = document.createElement("p");
var inputs = document.createElement("input");
divs.setAttribute("class","creatediv");
imgs.setAttribute('class',"createimg");
ps.setAttribute("class","createdivs");
inputs.setAttribute("class","createinput");
imgs.src="pic/1.jpg";
inputs.type="button";
inputs.value="删除";
ps.innerHTML=textValue;
divs.appendChild(imgs);
divs.appendChild(ps);
divs.appendChild(inputs);
if(txt.children.length==0){
txt.appendChild(divs);
}else{
txt.insertBefore(divs,get_firstChild(txt))
}
inputs.onclick = function(){
this.parentNode.parentNode.removeChild(this.parentNode)
}
}
}