实现最佳实践验证空白字段

我用这个表格

<div class="row">
    <form class="col s12">
        <div class="row">
            <div class="input-field col s12">
                <input id="email2" type="email" class="validate">
                <label for="email2" data-error="wrong" data-success="right">Email</label>
            </div>
            <div class="input-field col s12">
                <input id="example" name="example" type="text" class="validate" required="" aria-required="true">
                <label for="example" data-error="wrong" data-success="right">Field</label>
            </div>
        </div>
    </form>
</div>

邮件字段没问题。如果我发帖的邮件地址不正确，则会出现错误消息。

示例字段不起作用。我会检查字段是否不为空，然后显示错误。

怎么了？

你忘了添加required="" and aria-required="true"这是完整的片段：

<div class="row">
    <form class="col s12">
        <div class="row">
            <div class="input-field col s12">
                <input id="email2" type="email" class="validate" required="" aria-required="true">
                <label for="email2" data-error="wrong" data-success="right">Email</label>
            </div>
            <div class="input-field col s12">
                <input id="example" name="example" type="text" class="validate" required="" aria-required="true">
                <label for="example" data-error="wrong" data-success="right">Field</label>
            </div>
            <div class="input-field col s12">
                <button class="btn waves-effect waves-light" type="submit" name="action">Submit</button>
            </div>
        </div>
    </form>
</div>

http://jsfiddle.net/u76rdq2h/ http://jsfiddle.net/u76rdq2h/