noBlankTarget

Diagnostic Category: lint/a11y/noBlankTarget

JSX and TSX

Since: v1.0.0

Sources:

Same as: react/jsx-no-target-blank

Description

Disallow target="_blank" attribute without rel="noreferrer"

When creating anchor a element, there are times when its link has to be opened in a new browser tab via target="_blank" attribute. This attribute has to paired with rel="noreferrer" or you’re incur in a security issue.

Refer to the noreferrer documentation and the the noopener documentation

Examples

Invalid

<a href='http://external.link' target='_blank'>child</a>

code-block.jsx:1:32 lint/a11y/noBlankTarget  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Avoid using target=“_blank” without rel=“noreferrer”.
  
  > 1 │ <a href=‘http://external.link’ target=’_blank’>child</a>
      │                                ^^^^^^^^^^^^^^^
    2 │ 
  
  ℹ Opening external links in new tabs without rel=“noreferrer” is a security risk. See the explanation for more details.
  
  ℹ Safe fix: Add the rel=“noreferrer” attribute.
  
    1 │ <a·href=‘http://external.link’·target=’_blank’·rel=“noreferrer”>child</a>
      │                                               +++++++++++++++++

<a href='http://external.link' target='_blank' rel="noopener">child</a>

code-block.jsx:1:32 lint/a11y/noBlankTarget  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Avoid using target=“_blank” without rel=“noreferrer”.
  
  > 1 │ <a href=‘http://external.link’ target=’_blank’ rel=“noopener”>child</a>
      │                                ^^^^^^^^^^^^^^^
    2 │ 
  
  ℹ Opening external links in new tabs without rel=“noreferrer” is a security risk. See the explanation for more details.
  
  ℹ Safe fix: Add the “noreferrer” to the existing attribute.
  
    1 │ <a·href=‘http://external.link’·target=’_blank’·rel=“noreferrer·noopener”>child</a>
      │                                                     +++++++++++

<a {...props} href='http://external.link' target='_blank' rel="noopener">child</a>

code-block.jsx:1:43 lint/a11y/noBlankTarget  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Avoid using target=“_blank” without rel=“noreferrer”.
  
  > 1 │ <a {…props} href=‘http://external.link’ target=’_blank’ rel=“noopener”>child</a>
      │                                           ^^^^^^^^^^^^^^^
    2 │ 
  
  ℹ Opening external links in new tabs without rel=“noreferrer” is a security risk. See the explanation for more details.
  
  ℹ Safe fix: Add the “noreferrer” to the existing attribute.
  
    1 │ <a·{…props}·href=‘http://external.link’·target=’_blank’·rel=“noreferrer·noopener”>child</a>
      │                                                                +++++++++++

Valid

<a href='http://external.link' rel='noreferrer' target='_blank'>child</a>

<a href='http://external.link' target='_blank' rel="noopener" {...props}>child</a>

Options

The option allowDomains allows specific domains to use target="_blank" without rel="noreferrer". In the following configuration, it’s allowed to use the domains https://example.com and example.org:

{
    "//": "...",
    "options": {
        "allowDomains": ["https://example.com", "example.org"]
    }
}

<>
  <a target="_blank" href="https://example.com"></a>
  <a target="_blank" href="example.org"></a>
</>

Biome doesn’t check if the list contains valid URLs.

How to configure

{
  "linter": {
    "rules": {
      "a11y": {
        "noBlankTarget": "error"
      }
    }
  }
}