微博输入字数_php.cn手记

abstract：<!DOCTYPE html> <html> <head> <title>微博输入字符</title> <meta charset="utf-8"> &nbs
<!DOCTYPE html>

<html>

<head>

    <title>微博输入字符</title>

    <meta charset="utf-8">

    <style type="text/css">

        body{font-size: 12px;}

        .box{width: 600px;height: 160px;border: 8px solid pink;margin: 0px auto;padding: 10px;}

        img{float: left;}

        .box1{float: left;margin-left: 350px;width: 150px;height: 24px;text-align: right;font-size: 14px;color: #888;}

        .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: 160px;margin-right: 15px;color: #888;}

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

 

 

    </style>

    <script type="text/javascript">
    	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;		//微博的限制字数是140
    			if(m<0){
    				number.style.color="red"
    			}
    			else{
    				number.style.color="#888"
    			}
    			number.innerHTML=m;
    		}
    		bt.onclick=function(){
    			if (m==140) {
    				alert("你还没有输入，请输入要发布的内容！");
    				text.focus()
    			}
    			else if (m<0) {
    				alert("你的字数大于140字，不能发布");
    				text.focus
    			}
    			else{
    				alert("发布成功！")
    			}

    		}
    		aa();
    	}



    </script>

</head>

<body>

    <div class="box">

        <img src="img/01.phg">

        <div class="box1">

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

        </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="bt">

             

 

 

         

 

    </div>

 

</body>

</html>
Correcting teacher：韦小宝Correction time：2018-12-18 11:58:15
Teacher's summary：写的很棒！代码写的很规范！也很清晰！不错不错！
微博输入字数

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