JSFiddle - React, Tailwind, and code Playground
HTML
<input type="text" name="nome[]" value="">
<input type="text" name="nome[]" value="">
<input type="text" name="nome[]" value="">
<button>verificar</button>
CSS
.invalid {
border: 1px solid red;
}
JavaScript
$('input[name="nome[]"]').each(function(i, item){
if(item == "")
console.log("vazio");
});