Events #

The event system allows you to flexibly respond to any form change. For work with events, two commonly accepted methods are used:

• form.on(event, callback)
• form.emit(event, someData)

The form.on method returns a callback function that can be used to unsubscribe from event listener:

const off = form.on('disable', checkFields());
setTimeout(off, 1000);

After one second, the form will not respond to the disable event.

To work with the form, you can use internal events that are stored in Form static fields:

EVENT_DISABLE #

Called whenever the form.disable method is called, on the received values will either be an array of fields to block, or undefined.

form.on(FORM.EVENT_DISABLE, () => {}); // ['address', 'username']
form.disable(['address', 'username'])

EVENT_ENABLE #

Called whenever the form.enable method is called. Obtained values similar to EVENT_DISABLE events

EVENT_SUBSCRIBE #

Called whenever an element subscribes to the form.

The resulting element will be the signed object itself.

EVENT_UNSUBSCRIBE #

Called whenever an element is unsubscribed from the form. For example, when hiding (using v-if) InputField, this event will be fired.