JSFiddle - React, Tailwind, and code Playground

HTML

<div>
 <input type="file" class="sliderAluno" name="imagem" id="photoAluno"  multiple="multiple" />
</div>
<div>
 <input type="file" class="sliderAluno" name="imagem" id="photoAluno"  multiple="multiple" />
</div>
<div>
 <input type="file" class="sliderAluno" name="imagem" id="photoAluno"  multiple="multiple" />
</div>
<div>
 <input type="file" class="sliderAluno" name="imagem" id="photoAluno"  multiple="multiple" />
</div>

JavaScript

Input2 = document.querySelector("input.sliderAluno");
    Input2.onchange= function()
    {
    		alert("event");
}