我如何使用香草javascript从API在页面中执行搜索

Question

const ENDPOINTS = {

base:       "https://rickandmortyapi.com/api/",

characters: "https://rickandmortyapi.com/api/character",

locations:  "https://rickandmortyapi.com/api/location",

episodes:   "https://rickandmortyapi.com/api/episode"

}

// UI object instance

const ui = new UI();

// Fetch characters

async function fetchCharacters() {

    const response = await fetch(ENDPOINTS.characters);
    const data = await response.json()
        .catch(err => console.error(err));
    return data;
}

const characters = fetchCharacters()

.then(characters => {
        if(ui.showCharacters(characters)) {

registerEventListeners();

 }

});