interventionnelle.

https://developer.mozilla.org/en-US/docs/Web/Guide/Events/Event_handlers

DOM onevent handlers – Developer guides | MDN
https://developer.mozilla.org/en-US/docs/Web/Guide/Events/Event_handlers
Then this JavaScript demonstrates that the value of the HTML attribute is unaffected by changes to the JavaScript object’s property. let logElement = document.querySelector(‘div’); let el = document.querySelector(a); function log(msg) { logElement.innerHTML += `${msg}
` }; function…

https://www.w3schools.com/tags/tag_br.asp

HTML br tag
https://www.w3schools.com/tags/tag_br.asp
Definition and Usage. The
tag inserts a single line break. The
tag is useful for writing addresses or poems. The
tag is an empty tag which means that it has no end Tips and Notes. Note: Use the
tag to enter line breaks, not to add space between paragraphs. Browser Support.

https://learn.javascript.ru/display

Все значения свойства display
https://learn.javascript.ru/display