JSFiddle - React, Tailwind, and code Playground

HTML

<div id="test-1-yay"></div>

<div id="test-2-yay"></div>

<div id="test-3-yay"></div>

JavaScript

$("div[id^=test-]").each(function(){
    $that = $(this)
    $that.text("divID = " + $that.attr("id").split("-")[1])
})