Gutenberg Cheat Sheet

cheatsheet.js

// Get the data of a block
wp.data.select( 'core/block-editor' ).getBlocks()[0]

// Update attributes of another block
// wp.data.dispatch( 'core/editor' ).updateBlockAttributes( clientID, attributes )
wp.data.dispatch( 'core/block-editor' ).updateBlockAttributes( '10d88a6d-95d6-4e07-8293-5f59c83a26c0', { heading: 'New Heading' } )

// Get currently selected block.
wp.data.select( 'core/block-editor' ).getBlockSelectionStart()

// Count the total number of blocks in the editor (includes even nested)
var a = innerBlocks => {
  return innerBlocks.length + innerBlocks.reduce( ( sum, block ) => {
    return sum + a(block.innerBlocks)
  }, 0 )
}
a( wp.data.select( 'core/block-editor' ).__unstableGetClientIdsTree() )