<!DOCTYPE html> <html> <head> <meta charset="{CHARSET}"> <title></title> </head> <script type="text/javascript" /> function chkForm(this) { var value = thist.d1.value; var len = value.length; for(var i=0;i<len;i++){ if(value.charAt(i)>"9" || value.charAt(i)<"0"){ alert("含有非数字字符"); return false; } } return true; } </script> <body> <form onsubmit="return chkForm(this)"> <input type="text" name="d1"/> <input type="submit"/> </form> </body> </html>
时间: 2024-08-05 16:33:06