Type Alias OnChangeDelegate

OnChangeDelegate: (value: any, context: { oldValue: any }) => void

Function delegate for onChange event.

Type declaration

- (value: any, context: { oldValue: any }): void
- Parameters
  - value: any
    the new value of the field
  - context: { oldValue: any }
    - oldValue: any
      the old value of the field before the change
  Returns void

Example

const { form } tisa;
const { myField } tisa.form;

// handling field value changes
myField.onChange((value, { oldValue })=>{
  console.log(`${oldValue} -> ${value}`);
});