<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<script language="javascript">
function test(s){
if (!/^\d{6}$/.test(s)){alert("不是6位数字");}
if (/^(\d)\1+$/.test(s)){alert("全一样");}
var str = s.replace(/\d/g, function($0,pos){return parseInt($0)-pos;});
if (/^(\d)\1+$/.test(str)){alert("顺增");}
var str = s.replace(/\d/g, function($0,pos){return parseInt($0)+pos;});
if (/^(\d)\1+$/.test(str)){alert("顺减");}
alert(s);
}
</script>
</HEAD>
<BODY>
<button οnclick="return test('12345');">校验非6</button></br>
<button οnclick="return test('666666');">校验全一样</button></br>
<button οnclick="return test('123456');">校验顺增</button></br>
<button οnclick="return test('654321');">校验顺减</button></br>
<button οnclick="return test('134567');">校验成功</button>
</BODY>
</HTML>
