微博输入留言板

abstract：<!DOCTYPE html><html><head> <title>微博输入</title> <style type="text/css"> body{font-size:12px;} .box{width: 600px;height: 160px;border:10px solid pink;mar

3}[{B8WF1%Q73VH~$~]$C69.png

<!DOCTYPE html>

<html>

<head>

body{font-size:12px;}

.box{width: 600px;height: 160px;border:10px solid pink;margin: 0 auto;padding: 10px}

img{float:left;}

.box1{float:left;margin-left: 255px;width: 150px;height: 24px;text-align:right;font-size:14px;color: #ccc;}

.box1 span{font-size:16px;font-weight: bold;}

#text{width:600px; height: 100px;border:1px solid #888;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:150px;margin-right:15px;color:#888;}

#bt{float:left;width: 80px;height: 30px;border:none;background:#ffc09f;color: #fff;border-radius: 5px}

</style>

var text,number,m

window.onload = function(){

text = document.getElementById('text')

number = document.getElementById('number')

bt = document.getElementById('bt')

text.onkeyup=function aa(){

m = 140-text.value.length//微博限制字数140

if(m<0){

number.style.color="red"

}else{

number.style.color="#888"

}

number.innerHTML = m

}

bt.onclick=function(){

if(m==140){

alert("您还没有输入")

text.focus()

}else if(m<0){

alert("字数太多，不可以发布")

text.focus()

}else{

alert("发布成功")

}

aa()

}

</script>

</head>

<body>

<div class="box1">还可以输入<span id="number"></span> 字</div>

</div>

</body>

</html>

微博输入留言板

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