JSFiddle - React, Tailwind, and code Playground
HTML
<div class="container">
Click me!
<img id="firstIMG">
<img id="secondIMG">
</div>
JavaScript
$(document).on("click", ".container", function(){
var img = $(this).find("img"), // select images inside .container
len = img.length, // check if they exist
arr = [];
if( len > 0 ){
// images found, get id
img.each(function(){
arr.push( $(this).attr("id") );
});
alert(arr);
} else {
// images not found
}
});