JSFiddle - React, Tailwind, and code Playground

HTML

<span class=a1>+1</span> <span>1</span> <span class=z>2</span>
<span class=a1>+2</span> <span>100</span> <span class=z>200</span>

CSS

.a1 {margin:10px;
    background-color:pink;
    cursor:pointer}

JavaScript

$(".a1").on("click",function(){
	console.log($(this).next('.z').html())
})