<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>微博输入</title>
<style type="text/css">
body{font-size: 12px;}
.box{height: 165px;width: 600px;border: 10px solid pink;margin: 0 auto;}
img{float: left;}
.box1{float:left;margin-left:255px;height: 24px;width: 150px;text-align: right;font-size:14px; color: #888; }
#text{width:597px;height: 100px;border: 1px solid #ccc;margin-top: 5px;}
.box #sp1,#sp2,#sp3,#sp4,#sp5,#sp6{float: left;width: 30px;height: 32px;line-height: 32px;padding-left: 26px;}
#sp1{background: url(images/an5.png) no-repeat left center;}
#sp2{background: url(images/an4.png) no-repeat left center;}
#sp3{background: url(images/an3.png) no-repeat left center;}
#sp4{background: url(images/an2.png) no-repeat left center;}
#sp5{background: url(images/an1.png) no-repeat left center;width: 40px;}
#sp6{ margin-left: 158px;margin-right:15px;color: #888; }
#button{float: left;width: 80px;height: 30px;border: none;background: #ffc09f;color: #fff;border-radius: 5px;}
</style>
<script type="text/javascript">
var number,text,m
window.onload=function(){
number=document.getElementById('number')
text=document.getElementById('text')
button=document.getElementById('button')
text.onkeyup=function aa(){
m=140-text.value.length
number.innerHTML=m;
if(m<0){
number.style.color="red";
}else{
number.style.color="#888";
}
button.onclick=function(){
if(m==140){
alert("请输入内容")
text.focus();
}else if(m<0){
alert("内容过多，发布失败，请删除部分内容")
text.focus();
}else{
alert("发布成功")
}
aa();
}
}
}
</script>
</head>
<body>
<div class="box">
<img src="images/12.png">
<div class="box1">
还可以输入<span id="number"></span>字
</div>
<textarea id="text"></textarea>
<span id="sp1">表情</span>
<span id="sp2">图片</span>
<span id="sp3">视频</span>
<span id="sp4">话题</span>
<span id="sp5">长微博</span>
<span id="sp6">公开</span>
<input type="button" value="发布" id="button">
</div>
</body>
</html>
