jQuery selectors with variables

This might just be a typo or you actually use the id variable in a class, but maybe it should be:

jQuery('#one img #'+id)

Edit: Based on your comment below, you would use this:

$('#one img.'+id)

In your question you have a space between img and the .class, I've simply removed that so you get img.className or img.'+className

With the introduction of template literals in ECMAScript 2015, you can also do

$(`#one img.${id}`)

. is a class selector. Try changing that to a #:

$('#one img #'+id)