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sp webpart base.basewebpart.onpropertypanefieldchanged
John Nguyen edited this page Apr 22, 2021
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Home > @microsoft/sp-webpart-base > BaseWebPart > onPropertyPaneFieldChanged
This API is invoked after updating the new value of the property in the property bag when the PropertyPane is being used in Reactive mode. virtual
Signature:
protected onPropertyPaneFieldChanged(propertyPath: string, oldValue: any, newValue: any): void;| Parameter | Type | Description |
|---|---|---|
| propertyPath | string | JSON path of the property in the property bag. In the case of custom field, if no target property is provided then a custom value is assigned, which will be in the form of _CustomField<key provided when the custom field is created>. |
| oldValue | any | Old value of the property. This value could be undefined/empty in the case of custom field. |
| newValue | any | New value of the property. This value could be undefined/empty in the case of custom field. |
Returns:
void