JSFiddle - React, Tailwind, and code Playground

HTML

<div class="accounts hash">
    <input type="text" class="input-tiny keyHash" value="test"/>
    <input type="text" class="input-tiny keyHash" value="test12"/>
    <i class="icon-plus loadKey">Click</i>
</div>

JavaScript

$('.loadKey').click(function() {
        $(this).prevAll('input:text[class="input-tiny keyHash"]:first ').css('color','red')
    });