How can the form be changed depending on the selected option?

Question

Yii

It is necessary to change the form fields depending on the value of select'a, add additional. fields or clear them. Is there any plugin or material where you can read about it?

Answer 1

As an option to play around with scripts and conditional validations

Answer 2

You can implement dynamic formation of a set of fields on the js side using the ActiveForm object. You can read more about how to work with the ActiveForm js object here.

Answer 3

it is possible pjax'om to redraw the form in principle.

Answer 4

javascript (jquery or vue)
For example:

$('select').on('change', function() {
  alert( this.value );
})