a1/fetch.js

const url = "http://localhost/dev/get.php"
// const url = "http://qstack.pl:8080/z1/get.php"
let lista

fetch(url)
    .then(response => response.json())
    .then(data => {
        wyswietlSufiksy(data)
    });

function wyswietlSufiksy(data) {
    data.forEach((element) => document.querySelector('#nieposortowane').innerHTML += `<li> ${JSON.stringify(element.osoby)} </li>`);
}

document.getElementById("nieposortowane").onmouseover = function() {mouseOver()};
document.getElementById("nieposortowane").onmouseout = function() {mouseOut()};
function mouseOver() {
  document.getElementById("nieposortowane").style.color = "red";
}
function mouseOut() {
  document.getElementById("nieposortowane").style.color = "black";
}