选项卡与表单验证

Question

一个form下有四个table，table之间的切换通过next和back的button控制，怎样通过点击next的button，来验证这个table的数据？
简化的代码：

<div ms-controller="test">
    <form ms-validate="@validate" id="form">
        <div ms-visible="1==@step">
            <input type="text" ms-duplex-number="@aa" ms-rules='{required:true}' /><br>
            <button type="button" ms-click="@next(1)">next</button>
        </div>
        <div ms-visible="2==@step">
            <input type="text" ms-duplex-number="@bb" ms-rules='{required:true}' /><br>
            <br>
            <button type="button" ms-click="@next(2)">next</button>
            <button type="button" ms-click="@back(2)">back</button>
        </div>
        <div ms-visible="3==@step">
            <input type="text" ms-duplex-number="@cc" ms-rules='{required:true}' /><br>
            <br>
            <button type="button" ms-click="@next(3)">next</button>
            <button type="button" ms-click="@back(3)">back</button>
        </div>
        <div ms-visible="4==@step">
            <input type="text" ms-duplex-number="@dd" ms-rules='{required:true}' /><br>
            <br>
            <button type="button" ms-click="@back(4)">back</button>
            <input class="aa" type="submit" value="ok">
        </div>
    </form>
</div>