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blockly > Field > doValueInvalid_
Field.doValueInvalid_() method
Used to notify the field an invalid value was input. Can be overridden by subclasses, see FieldTextInput. No-op by default.
Signature:
protected doValueInvalid_(_invalidValue: any, _fireChangeEvent?: boolean): void;
Parameters
| Parameter |
Type |
Description |
| _invalidValue |
any |
The input value that was determined to be invalid. |
| _fireChangeEvent |
boolean |
(Optional) Whether to fire a change event if the value changes. |
Returns:
void
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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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-09-18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\u003e\u003ccode\u003eField.doValueInvalid_()\u003c/code\u003e is a method called when a field receives an invalid input value.\u003c/p\u003e\n"],["\u003cp\u003eIt can be overridden by subclasses to define custom behavior for handling invalid input, while the default behavior is to do nothing.\u003c/p\u003e\n"],["\u003cp\u003eThe method receives the invalid value and an optional flag to indicate whether a change event should be fired.\u003c/p\u003e\n"]]],[],null,["[blockly](./blockly.md) \\\u003e [Field](./blockly.field_class.md) \\\u003e [doValueInvalid_](./blockly.field_class.dovalueinvalid__1_method.md)\n\nField.doValueInvalid_() method\n\nUsed to notify the field an invalid value was input. Can be overridden by subclasses, see FieldTextInput. No-op by default.\n\n**Signature:** \n\n protected doValueInvalid_(_invalidValue: any, _fireChangeEvent?: boolean): void;\n\nParameters\n\n| Parameter | Type | Description |\n|------------------|---------|-------------------------------------------------------------------|\n| _invalidValue | any | The input value that was determined to be invalid. |\n| _fireChangeEvent | boolean | *(Optional)* Whether to fire a change event if the value changes. |\n\n**Returns:**\n\nvoid"]]
