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blockly > comments > CommentView > addTextChangeListener
Registers a callback that listens for text changes on the comment editor.
Signature:
addTextChangeListener(listener: (oldText: string, newText: string) => void): void;
Parameters
| Parameter |
Type |
Description |
| listener |
(oldText: string, newText: string) => void |
|
Returns:
void
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Last updated 2025-07-24 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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-07-24 UTC."],[[["The `addTextChangeListener` method allows you to register a callback function that is triggered whenever the text of a comment changes."],["The provided callback function receives the old and new text values as arguments, enabling you to track and respond to text modifications."],["This method is part of the `CommentView` class within the `Blockly.comments` namespace and is crucial for monitoring changes in comment text content."]]],[]]
