textarea文本域字数控制---并显示已输入字数


<!doctype html>
<html lang="en">
 <head>
  <meta charset="UTF-8">
  <meta name="Generator" content="EditPlus®">
  <meta name="Author" content="">
  <meta name="Keywords" content="">
  <meta name="Description" content="">
  <title>Document</title>
 </head>
 <body>
  <script
 src="http://code.jquery.com/jquery-1.4.1.js"></script>
<script type="text/javascript">
    
    //字数限制
    window.onload = function() {
        //(document)
        document.getElementById('note').onkeyup = function() {        
            document.getElementById('text-count').innerHTML=this.value.length;
        }
    //(jquery)
        $('#note2').keyup(function() {
        //    var val=$('#note2').val();
        //    var len=val.length;
        var len=this.value.length
                    $('#text-count2').text(len);

        })
    }
</script>
<div>
<textarea cols="40" rows="5" id="note"
                    name="note" maxlength="100" value=""
                    onkeyup="this.value=this.value.substring(0, 100)"
                    placeholder="最多可输入100字"></textarea><span id="text-count" value="">0</span>/100
                    </div>
<div>
<textarea cols="40" rows="5" id="note2"
                    name="note2" maxlength="100" value=""
                    onkeyup="this.value=this.value.substring(0, 100)"
                    placeholder="最多可输入100字"></textarea><span id="text-count2" value="">0</span>/100
                    </div>
 </body>
</html>

   


免责声明!

本站转载的文章为个人学习借鉴使用,本站对版权不负任何法律责任。如果侵犯了您的隐私权益,请联系本站邮箱yoyou2525@163.com删除。



 
粤ICP备18138465号  © 2018-2025 CODEPRJ.COM