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Isomorphic validation javascript library ISOMORPHIC-VALIDATION

toEventHandler() function

Converts a state callback function to an event handler function.

Syntax

toEventHandler(stateCallback, isValid)

Parameters

  • stateCallback
    A function with the signature of a state callback.

  • isValid optional
    A validity state value to be assigned to a ValidationResult object passed to stateCallback.
    Default: false.

Return value

A function with the signature of an event listener.

Description

This helper function is intended to be used with apply effect functions in case the effect is needed to be performed as an event listener.

import { toEventHandler, applyBox } from 'isomorphic-validation/ui';


const [, showMsg] = applyBox({ false: { value: 'Invalid data.' } });


// ...


form.addEventListener('focusout', toEventHandler(showMsg));


Implementation: to-event-handler.js.