Stay organized with collections
Save and categorize content based on your preferences.
blockly > Block > compose
Block.compose property
An optional method that reconfigures the block based on the contents of the mutator dialog.
Signature:
compose?: (rootBlock: Block) => void;
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2025-05-16 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-05-16 UTC."],[],["The `Block.compose` property is an optional function within the Blockly library. Its purpose is to modify a block's configuration after a mutator dialog's contents have been changed. This function takes a `Block` as a parameter and executes to reconfigure the block based on the updates from the dialog. It uses the updated information in order to compose the block.\n"]]