Bookmarklet to copy image path from HTML elements

bookmarklet.js

javascript:

/**
 * WIP
 */

function copyToClipboard(text) {
  const input = document.createElement('input');
  input.style.position = 'fixed';
  input.style.opacity = 0;
  input.value = text;
  document.body.appendChild(input);
  input.select();
  document.execCommand('Copy');
  document.body.removeChild(input);
};

function handleMouseenter(event) {
  const targetElement = event.target;
  targetElement.style.borderColor = 'red';
  targetElement.style.borderStyle = 'solid';
  targetElement.style.borderWidth = '6px';
}

function handleMouseleave(event) {
  const targetElement = event.target;
  targetElement.style.borderColor = '';
  targetElement.style.borderStyle = '';
  targetElement.style.borderWidth = '';
}

function handleClick(event) {
  event.target.removeEventListener('mouseenter', handleMouseenter);
  event.target.removeEventListener('mouseleave', handleMouseleave);
  event.target.removeEventListener(event.type, handleClick);
  //const imagePath = event.target.style.backgroundImage.replace(/url\("(.+)"\)/, '$1');
  //copyToClipboard(imagePath);
}

function init() {
  const imageElements = Array.prototype.slice.call(document.querySelectorAll('img[src]'));
  imageElements.addEventListener('mouseenter', handleMouseenter, false);
  imageElements.addEventListener('mouseleave', handleMouseleave, false);
  imageElements.addEventListener('click', handleClick, false);

  const pictureElements = Array.prototype.slice.call(document.querySelectorAll('picture source[srcset]'));
  pictureElements.addEventListener('mouseenter', handleMouseenter, false);
  pictureElements.addEventListener('mouseleave', handleMouseleave, false);
  pictureElements.addEventListener('click', handleClick, false);

  const backgroundImageElements = (function () {
    const styledElements = document.querySelectorAll('*[style]');
    return Array.prototype.filter.call(styledElements, function (styledElement) {
    return styledElements.style.backgroundImage;
    });
  })();
  backgroundImageElements.addEventListener('mouseenter', handleMouseenter, false);
  backgroundImageElements.addEventListener('mouseleave', handleMouseleave, false);
  backgroundImageElements.addEventListener('click', handleClick, false);
}

init();