So I have a file like

```
<div class="u1">

<p id="level1"></p>
<p id="level2"></p>

</div>

<div class="u2">

<p id="level1"></p>
<p id="level3"></p>

</div>

```

and if I use something like

```
document.getElementbyId("level1").innerText(or innerHtml) = "Hello"

```

it writes that string on one element, and not on every element with id="level1"

I tried with

```
$('#level1').text("Hello");

```

but it works only for one.

I need something to write a string on every element with `id="level1"`.