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<html> <head> <title>JS限制Textarea文本域字元個數</title> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <SCRIPT LANGUAGE="JavaScript"> <!--// function textCounter(field, countfield, maxlimit) { // 函數，3個參數，表單名字，表單域元素名，限制字元； if (field.value.length > maxlimit) //如果元素區字元數大於最大字元數，按照最大字元數截斷； fieldfield.value = field.value.substring(0, maxlimit); else //在記數區文字框內顯示剩餘的字元數； countfield.value = maxlimit - field.value.length; } --> </SCRIPT> </head> <body> <form name=myform action=""> <textarea name="message" cols="28" rows="5" onKeyDown="textCounter(message,remLen,6);" onKeyUp="textCounter(message,remLen,6);"></textarea> 您還可以輸入:<input name="remLen" type="text" value="6" size="5" readonly="readonly">個字元 </form> </body> </html>
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