Tab

---

• Block Relationships
• Attributes
• Supports
• Context
• Block Markup
• Source

---

A single tab button in the tab list.

• Name: core/tab
• Category: design
• API Version: 3
• Block Type: Hybrid (static save + server enhancements)

Block Relationships

Parent blocks (direct):
– core/tab-list

Attributes

Defined via the attributes property in block.json.

This block has no custom attributes.

Supports

Defined via the supports property in block.json.

• html: false
• reusable: false
• visibility: false
• lock: false
• color:
  • background: true
  • text: true
• typography:
  • fontSize: true
  • textAlign: true
• spacing:
  • padding: true

Context

Defined via the usesContext and providesContext properties in block.json.

Uses context:

• core/tabs-list
• core/tabs-activeTabIndex
• core/tabs-editorActiveTabIndex
• core/tab-index
• core/tab-id
• core/tab-label

Block Markup

This is a hybrid block. It saves static markup that the server may enhance during rendering.

<!-- wp:tab -->
<!-- Content... -->
<!-- /wp:tab -->

Source

• block.json (reference)
• Source directory — browse edit.js, save.js, index.php, and more.