blockly > Events > BlockMove > oldParentId
Events.BlockMove.oldParentId property
The ID of the old parent block. Undefined if it was a top-level block.
Signature:
oldParentId?: string;
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 2024-09-18 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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-09-18 UTC."],[[["The `oldParentId` property stores the ID of the block's previous parent block before a move event."],["If the block was initially at the top level (not nested within another block), `oldParentId` will be undefined."],["This property is specifically part of the `BlockMove` event within Blockly's Events namespace."],["Developers can use `oldParentId` to track and respond to changes in block hierarchy during drag-and-drop interactions."]]],[]]