input框限制輸入：整數或最多兩位小數

<input id="cashMoney" type="number" maxlength="10" placeholder="請輸入金額" />

<script>
    $(function(){
        $('#cashMoney').bind('input propertychange',amountVal );
    });
    function amountVal(){
        var replyGold=document.getElementById("cashMoney");
        var regStrs = [
            ['[^\\d\\.]+$', ''], //禁止錄入任何非數字和點
            ['\\.(\\d?)\\.+', '.$1'], //禁止錄入兩個以上的點
            ['^(\\d+\\.\\d{2}).+', '$1'] //禁止錄入小數點後兩位以上
        ];
        for(i=0; i<regStrs.length; i++){
            var reg = new RegExp(regStrs[i][0]);
            replyGold.value = replyGold.value.replace(reg, regStrs[i][1]);
        }
    }
</script>