JSFiddle - React, Tailwind, and code Playground
HTML
<div id='aparent'>sometext<a href="#">delete</a></div>
JavaScript
mySiblingText = "";
myParentId ="";
$('a').click(function(){
var mypart = $(this)[0].previousSibling;
mySiblingText = $(mypart).text();
myParentId = $(this).parent().attr('id')
alert(mySiblingText+myParentId);
});