【Html代碼】
<table><tr><td>短信內容：</td><td><textarea name="message" cols="96" rows="5" onKeyDown="textCounter(message,remLen,65);"onKeyUp="textCounter(message,remLen,65);"></textarea><td></tr><tr><td></td><td>您還可以輸入:<input name="remLen" type="text" value="65" size="5" readonly="readonly">個字符,每條短信最大允許輸入<strong>65</strong>個字符</td></tr></table>
【對應的js代碼】
<script>function textCounter(field, countfield, maxlimit) {if (field.value.length > maxlimit)field.value = field.value.substring(0, maxlimit);elsecountfield.value = maxlimit - field.value.length;}</script>