<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<div id="test"></div>
let a= [...Array(10)];
test.innerHTML = a.map((x,i)=> `<div id="myDiv${i}" class="box">${i}</div>`).join``;
a.map((x,i)=> $(`#myDiv${i}`).click(e=> divFunction(e.target)));
test.innerHTML = a.map((x,i)=> `<div id="myDiv${i}" class="box" onclick="divFunction(this)">${i}</div>`).join``;
test.innerHTML = a.map((x,i)=> `<div id="myDiv${i}" class="box">${i}</div>`).join``;
a.map((x,i)=> document.getElementById(`myDiv${i}`).onclick = e=> divFunction(e.target) );
test.innerHTML = a.map((x,i)=> `<div id="myDiv${i}" class="box">${i}</div>`).join``;
a.map((x,i)=> document.getElementById(`myDiv${i}`).addEventListener('click', e=> divFunction(e.target) ));
test.innerHTML = a.map((x,i)=> `<div id="myDiv${i}" class="box">${i}</div>`).join``;
a.map((x,i)=> document.querySelector(`#myDiv${i}`).onclick = e=> divFunction(e.target) );
test.innerHTML = a.map((x,i)=> `<div id="myDiv${i}" class="box">${i}</div>`).join``;
a.map((x,i)=> document.querySelector(`#myDiv${i}`).addEventListener('click', e=> divFunction(e.target) ));
test.innerHTML = a.map((x,i)=> `<div id="myDiv${i}" class="box">${i}</div>`).join``;
a.map((x,i)=> window[`myDiv${i}`].onclick = e=> divFunction(e.target) );
test.innerHTML = a.map((x,i)=> `<div id="myDiv${i}" class="box">${i}</div>`).join``;
a.map((x,i)=> window[`myDiv${i}`].addEventListener('click',e=> divFunction(e.target)));
test.innerHTML = a.map((x,i)=> `<div id="myDiv${i}" class="box">${i}</div>`).join``;
[...document.querySelectorAll(`.box`)].map(el => el.onclick = e=> divFunction(e.target));
test.innerHTML = a.map((x,i)=> `<div id="myDiv${i}" class="box">${i}</div>`).join``;
[...document.querySelectorAll(`.box`)].map(el => el.addEventListener('click', e=> divFunction(e.target)));
test.innerHTML = a.map((x,i)=> `<div id="myDiv${i}" class="box">${i}</div>`).join``;
$(`.box`).click(e=> divFunction(e.target));