I was searching about microdata for Google's Sitelink Searchbox. So I found a page on google site.
this is the microdata code -
<div itemscope itemtype="https://schema.org/WebSite">
<meta itemprop="url" content="https://www.example.com/"/>
<form itemprop="potentialAction" itemscope itemtype="https://schema.org/SearchAction">
<meta itemprop="target" content="https://query.example.com/search?q={search_term_string}"/>
<input itemprop="query-input" type="text" name="search_term_string" required/>
<input type="submit"/>
</form>
</div>
URL - > https://developers.google.com/search/docs/advanced/structured-data/sitelinks-searchbox
Some meta tags are allowed inside
<div>and<form>tags inside the document body. See<meta>: The metadata element - HTML: HyperText Markup Language | MDN which says:From the page about flow content, the elements that allow flow content include both
<div>and<form>which are used in the<body>.So while many meta tags only belong in the
<head>, when a meta tag hasitempropit can go in the<body>(or in the<head>).