How to change button text in CF7 plugin?

Question

JavaScript

Contact Form Plugin - Contact Form 7 It is
necessary that when the form is successfully submitted, the button text changes from "submit" to "sent". How to implement?
Here is the successful send event:

var wpcf7Elm = document.querySelector( '.wpcf7' );
wpcf7Elm.addEventListener( 'wpcf7submit', function( event ) {
 //что тут?
}, false );

Answer 1

Look in the documentation for information on the request: "cf7 dom events"