JSFiddle - React, Tailwind, and code Playground

HTML

<div id="container">
  <div id="myId1"></div>
  <div id="myId2"></div>
  <div id="myId3"></div>
</div>

JavaScript

console.log($('[id^=myId]'));
setTimeout(function(){
	$('#container').append(`<div id="myId4"></div>`);
  console.log($('[id^=myId]'));
},1000);