摘要：以下代码：<!DOCTYPE html><html><head> <meta charset="utf-8"/> <link href="css/home.css" re
以下代码：
<!DOCTYPE html><html><head>
<meta charset="utf-8"/>
<link href="css/home.css" rel="stylesheet" type="text/css"/>
<script src="js/home.js"></script>
<title>模仿新浪微博</title></head><body>
<div id="content">
<div id="cont_Right">
<div id="share">
<div id="word"><img src="images/send_weibo.png"/>
<div class="aviableCount">还可以输入<span id="sp">140</span>字</div>
</div>
<div id="box">
<div class="box1">
<!--设置最大输入字符长度为140-->
<textarea onkeyup="show()" cols="55" rows="25" style="resize: none" name="weiboTextArea" id="weiboTextArea" class="box2" maxlength="140"></textarea>
</div>
</div>
<div id="sub">
<input name="submit" type="button" value="广播"/>
</div>
</div></div></body></html>
js:
function show(){ var tarea=document.getElementById("weiboTextArea"); var maxlength=140; var length=tarea.value.length; var count=maxlength-length; var sp=document.getElementById("sp");
sp.innerHTML=count; if(count<=25){
sp.style.color="red";
}else{
sp.removeAttribute("style");
}
}
css:
@charset "utf-8";
body{
margin:0px;
padding:0px;
background-image:url(../images/mm_body_bg.jpg);
}
#content{ //border:#000 thin 2px; width:850px;
margin:0px auto;
padding:45px 0px 0px 0px; //background:#D2EAEE repeat;}
#cont_Right{
background:#FFF;
width:605px;
height:auto;min-height:500px;
margin:0px auto;
padding:0px;
display:block; float:right;
}
#share{ //background-color:#CCC; width:550px;
height:175px;
margin:0px auto; //border-bottom:1px solid #CCCCCC; padding:0px;
}
#word{
margin:15px 0px 0px 20px;
padding:0px;
}
#box{
background-color:#063;
width:550px;
height:90px;
}
.box1{
width:542px;
height:50px;
margin:7px 0px 0px 0px;
padding:2px 3px 0px 3px;
}
.box2{
width:540px;
height:60px;
border: 1px solid #CCCCCC;
margin:0px;
padding:8px 0px 0px 4px;
font-family:Tahoma, Geneva, sans-serif;
font-weight: normal;
font-size: 12px;
}
#sub{ float:right;
margin:5px 0px 0px 0px;
}
批改老师：西门大官人批改时间：2019-05-05 10:36:37
老师总结：以下代码并未实现限制字数的功能：
<!DOCTYPE html><html><head>
<meta charset="utf-8"/>
<link href="css/home.css" rel="stylesheet" type="text/css&qu
