How to autofocus a text field in dropdown when clicking on a link?

Question

Bootstrap

It is necessary that when the link is clicked, the autofocus field pops up - https://jsfiddle.net/95hg4d8j/

Answer 1

setTimeout(() => {
searchblock.focus();
},0);
so do it or similar, it turns out you press focus () works, but the element has not yet appeared and it works in nowhere))