为什么Visual Studio不支持<main>?

BJl*_*du4 5 asp.net

我的visual studio写道,该<main>标签不受支持,但我使用的是HTML5验证器.此外,<nav>标签通过验证.问题是什么?http://i.gyazo.com/485e421e2f44202ee2905bb130719e01.png

<body>
    <div id="main-wrapper">
        <div style="width: auto; background-color: #00adae;">??????? ????</div>

        <div id="gallery-wrapper">
            <div id="categories-container">
                <div id="categories-title">@Model.Name</div>
                <div id="categories-menu-container">
                    @if (Model.Categories != null)
                    {
                        <nav id="categories-menu">
                            <ul>
                                @foreach (var category in Model.Categories)
                                {
                                    <li>
                                        <a href="#" data-category-id="@category.Id">@category.Name</a>
                                    </li>
                                }
                            </ul>
                        </nav>
                    }
                </div>
            </div>
            <div id="photos-masonry-container">
                <div id="photos-masonry-title"></div>
                <main id="photos-masonry"></main>
            </div>
        </div>
    </div>
</body>
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ale*_*dro 9

因为它不包含在相关的xsd架构中,但您可以轻松添加新元素

C:\ Program Files(x86)\ Microsoft Visual Studio 12.0\Common7\Packages\schemas\html\html_5.xsd

<xsd:element name="main" type="simpleFlowContentElement" vs:disallowedancestor="address" />
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您还可以签入架构缓存

C:\Program Files (x86)\Microsoft Visual Studio 12.0\Xml\Schemas
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