`required-h1`

Warn if there is no h1 element in the document.

❌ Examples of incorrect code for this rule

<html>
  <head>
    <title>page</title>
  </head>
  <body>
    <main>
      <p>text</p>
    </main>
  </body>
</html>

✅ Examples of correct code for this rule

<html>
  <head>
    <title>page</title>
  </head>
  <body>
    <main>
      <h1>heading</h1>
      <p>text</p>
    </main>
  </body>
</html>

Interface

{
  "required-h1": boolean
}

{
  "required-h1": {
    "options": {
      "expected-once"?: boolean
      "in-document-fragment"?: boolean
    }
  }
}

Property	Type	Default Value	Description
`expected-once`	`boolean`	`"true"`	Warn if there is a duplicate `h1` tag in the document.
`in-document-fragment`	`boolean`	`"false"`	Set it to `true` if you want this rule to apply within document fragment rather than the entire document.

error