blockly > Events > CommentMove > isNull
Events.CommentMove.isNull() method
Does this event record any change of state?
Signature:
isNull(): boolean;
Returns:
boolean
False if something changed.
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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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-09-18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."],[[["\u003cp\u003eThe \u003ccode\u003eisNull()\u003c/code\u003e method, belonging to the \u003ccode\u003eBlockly.Events.CommentMove\u003c/code\u003e class, determines if the event caused any state changes.\u003c/p\u003e\n"],["\u003cp\u003eIt returns \u003ccode\u003efalse\u003c/code\u003e if the comment's position or visibility was modified, implying a change, and \u003ccode\u003etrue\u003c/code\u003e otherwise.\u003c/p\u003e\n"]]],["The `CommentMove.isNull()` method, part of the Blockly Events system, determines if a `CommentMove` event represents an actual change in the state. It returns a boolean value: `false` indicates that a change has occurred, while `true` would indicate no change. The method's core function is to assess whether the `CommentMove` event reflects a modification or is simply a placeholder with no alterations.\n"],null,["[blockly](./blockly.md) \\\u003e [Events](./blockly.events_namespace.md) \\\u003e [CommentMove](./blockly.events_namespace.commentmove_class.md) \\\u003e [isNull](./blockly.events_namespace.commentmove_class.isnull_1_method.md)\n\nEvents.CommentMove.isNull() method\n\nDoes this event record any change of state?\n\n**Signature:** \n\n isNull(): boolean;\n\n**Returns:**\n\nboolean\n\nFalse if something changed."]]