interactive tabindex='-1'

-demo https://codepen.io/gnjo/pen/ZZXrGY
-delete keyを押すと自身を削除する。

///core
 el.setAttribute('tabindex','-1') //interactive-able

let fn={}
fn.deleteMe=function(el){
 let is={}; 
 is.element=function(o){return !!(o && o.nodeType === 1)}
 ;
 if(!is.element(el)){
  console.log('delemteMe not element',el)
  return el;
 }
 el.setAttribute('tabindex','-1') //interactive-able
 el.style.outline='none'
 el.onkeydown=(e)=>{
  if(e.which===46) e.target.remove();//46 delete
 }
 return el;
}


let a=document.querySelector('#a')
a.onkeydown=(e)=>{
 console.log(e.type,e)
}
let b=document.querySelector('#b')
fn.deleteMe(b)///////

<img id="a" src="https://i.imgur.com/KkuF4ga.png">

<img id="b" src="https://i.imgur.com/KkuF4ga.png">