no-refer-to-non-existent-id

Detect references to non-existent ids.

Severity

error

❌ Incorrect

<label for="missing">Name</label>

✅ Correct

<label for="name">Name</label>
<input id="name" type="text">

Reference

• HTML Standard - The id attribute

Configuration

{
  "rules": {
    "no-refer-to-non-existent-id": "error"
  }
}