Delete Niconico news chrome extension

manifest.json

{
  "name": "DeleteNiconicoNewsBar",
  "version": "0.0.1",
  "manifest_version": 2,
  "description": "The exntension which deletes a niconicoo news bar.",
  "content_scripts": [
    {
      "matches": ["http://www.nicovideo.jp/watch/*"],
      "js": ["script.js"],
      "run_at": "document_idle"
    }
  ]
}

script.js

obstructive_element_selectors = [
  '.MarqueeContainer',
  '.BottomContainer',
  '.BottomContainer-side',
  '.MiniBannerAdContainer',
  '.FooterContainer',
  '.CommentPanelContainer',
  '.UadButton ',
  '.UadButtonBalloon',
  '.HeaderContainer-searchBox'
]
obstructive_element_selectors.forEach(
  (selector) => {
    element = document.querySelector(selector)
    if(element)
      element.remove()
  }
)

document.querySelectorAll('.VideoMenuShareButton').forEach((e) => {e.remove()})
container = document.querySelector('.MainContainer-commentPanel')
container.style.position = 'static'

tags = document.querySelector('.TagContainer-area')
tags.style.display = 'block'

tag_container = document.querySelector('.TagContainer')
tag_container.style.width = '50%'

setTimeout(
  () => {
    ad = document.querySelector('.MiniBannerAdContainer')
    if(ad)
      ad.remove()
    ad_baloon = document.querySelector('.UadButtonBalloon')
    if(ad_baloon)
      ad_baloon.remove()
  }, 1000
)