CodePen Embed - 19. Managing ::backdrop

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Math.ceil(min) + 1) + Math.ceil(min)\\n  );\\n\\nconst destroyPopUp = (e) => {\\n  // Remove the id from the list\\n  const popIndex = popUps.indexOf(e.target.id);\\n  if (popIndex !== -1) {\\n    // If there is an index before, add the attribute to that.\\n    popUps.splice(popIndex, 1);\\n    if (popUps.length !== 0)\\n      document\\n        .querySelector(`#${popUps[0]}`)\\n        .setAttribute(BACKDROP_ATTRIBUTE, true);\\n    e.target.remove();\\n  }\\n};\\n\\nconst createPopUp = () => {\\n  const pop = Object.assign(document.createElement(\\\"div\\\"), {\\n    id: `pop--${popUps.length}`,\\n    popover: \\\"manual\\\",\\n    className: \\\"window popup\\\",\\n    innerHTML: `\\n      <div class=\\\"title-bar\\\">\\n        <div class=\\\"title-bar-text\\\">Generated Pop-up</div>\\n        <div class=\\\"title-bar-controls\\\">\\n          <button aria-label=\\\"Close\\\"></button>\\n        </div>\\n      </div>\\n      <div class=\\\"window-body\\\">\\n        <p>There's only ever one backdrop!</p>\\n        <section class=\\\"field-row\\\">\\n          <button autofocus>Add another pop-up</button>\\n          <button>Cancel</button>\\n        </section>\\n      </div>\\n    `\\n  });\\n\\n  const POP_BUTTONS = pop.querySelectorAll(\\\"button\\\");\\n\\n  POP_BUTTONS[0].addEventListener(\\\"click\\\", () => pop.hidePopover());\\n  POP_BUTTONS[1].addEventListener(\\\"click\\\", createPopUp);\\n  POP_BUTTONS[2].addEventListener(\\\"click\\\", () => pop.hidePopover());\\n\\n  pop.addEventListener(\\\"popuphide\\\", destroyPopUp);\\n\\n  if (popUps.length === 0) pop.setAttribute(BACKDROP_ATTRIBUTE, true);\\n\\n  document.body.insertBefore(pop, OG_POP);\\n\\n  pop.style.setProperty(\\\"--x\\\", randomInRange(20, 80));\\n  pop.style.setProperty(\\\"--y\\\", randomInRange(20, 80));\\n\\n  popUps.push(pop.id);\\n  pop.showPopover();\\n  // Remove and Re-add the OG to promote it above others in the top layer\\n  OG_POP.hidePopover();\\n  OG_POP.showPopover();\\n};\\n\\nconst clearPopUps = () => {\\n  const POPS = document.querySelectorAll(\\\"[popover]:not(.og)\\\");\\n  for (const POP of POPS) {\\n    POP.hidePopover();\\n  }\\n};\\n\\nADDER.addEventListener(\\\"click\\\", createPopUp);\\nCLEARER.addEventListener(\\\"click\\\", clearPopUps);\\nOG_POP.showPopover();\\n\",\"html_pre_processor\":\"none\",\"css_pre_processor\":\"none\",\"js_pre_processor\":\"none\",\"html_classes\":\"popup-support\",\"css_starter\":\"neither\",\"js_library\":null,\"created_at\":\"2022-09-03T20:06:51.983Z\",\"updated_at\":\"2023-01-19T11:20:35.242Z\",\"title\":\"19. 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