JSFiddle - React, Tailwind, and code Playground

HTML

<div>
  <p><input class="check" id="check-option-1" name="name" type="checkbox">
  <label for="check-option-1"></label>
  </p>
  <img src="http://lorempixel.com/30/30/city" data-input="check-option-1">
  <p class="copy">1</p>
  <p class="copy-2">1.1</p>
</div>
<div>
  <p><input class="check" id="check-option-2" name="name" type="checkbox">
  <label for="check-option-2"></label>
  </p>
  <img src="http://lorempixel.com/30/30/technics" data-input="check-option-2">
  <p class="copy">2</p>
  <p class="copy-2">2.1</p>
</div>

JavaScript

$('body').on('change', '.check', function(){
    var id = $(this).attr('id');
    if ($(this).prop('checked')) {
        var img = $('img[data-input="'+id+'"]').attr('src');
        console.log(img);
}
});