on() method

Listen on particular event

on(event: String, func: Function): Core

(* denotes a required parameter)

Parameter	Type	Description
`event`*	`String`	The event name
`func`*	`Function`	The event handler

Using the global script in the browser

const fv = FormValidation.formValidation(
    document.getElementById('demoForm'),
    {
        ...
    }
);

const invalidFieldHandler = function(field) {
    // `field` is name of invalid field
    ...
};

fv.on('core.field.invalid', invalidFieldHandler);

Using the ES6 module

import { formValidation } from '/path/to/@form-validation/cjs/bundle/popular';

const fv = formValidation(
    document.getElementById('demoForm'),
    {
        ...
    }
);

const invalidFieldHandler = function(field) {
    // `field` is name of invalid field
    ...
};

fv.on('core.field.invalid', invalidFieldHandler);

Using the npm package

import { formValidation } from '@form-validation/bundle/popular';

const fv = formValidation(
    document.getElementById('demoForm'),
    {
        ...
    }
);

const invalidFieldHandler = function(field) {
    // `field` is name of invalid field
    ...
};

fv.on('core.field.invalid', invalidFieldHandler);

off() method registerFilter() method