JSFiddle - React, Tailwind, and code Playground
HTML
<input type="text" class='myclass' value="start">
<div>
<input type="text" class='myclass' value="sea">
</div>
<button class="mybutton">Catch</button>
<br/>
<input type="text" value="end" class='myclass'>
JavaScript
$('.mybutton').click(function(){
var text = $(this).prev('.myclass').val();
console.log(text);
});