onkeyup的用法,及案例

2009-10-09 22:33:02 by 【6yang】, 156 visits, 收藏 | 返回

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>onkeyup的用法,及案例</title>

<script type="text/javascript">
<!--
function getneedmoney(theusernum,prc,resultid){
 var usernum=parseInt(theusernum.value);
 var tmptotalprc=usernum*prc;
 if(usernum>=10&&usernum<20){
  tmptotalprc=tmptotalprc*9/10;
 }else if(usernum>=20&&usernum<30){
  tmptotalprc=tmptotalprc*8/10;
 }else if(usernum>=30&&usernum<50){
  tmptotalprc=tmptotalprc*7/10;
 }else if(usernum>=50&&usernum<100){
  tmptotalprc=tmptotalprc*6/10;
 }else if(usernum>=100){
  tmptotalprc=tmptotalprc*5/10;
 }else{
  tmptotalprc=tmptotalprc;
 }
 document.getElementById(resultid).innerHTML=tmptotalprc;
}

 

//-->
</script>
</head>
<body>
            <form name="emailfrm" action="eml_frm.asp" method="get">
              <div id="mail_gg">
                <table width="70%" height="34" border="0" cellspacing="0" cellpadding="0" style="_height:auto">
                  <tr>
                    <td width="23%" align="right">需要输入的数字</td>
                    <td width="16%" align="center"><input id="usernum100" name="usernum" type="text" class="num_input" maxlength="4" value="5"    onkeyup="javascript: getneedmoney(this,100,'needmoney100')"   /></td>
                    <td width="11%">个</td>
                    <td width="28%"><b>= <span id="needmoney100">100</span></b>元/年</td>
                  </tr>
                </table>
              </div>
          </form>


</body>
</html>

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