popup.js

'use strict'

const myTabs = document.querySelectorAll('ul.nav-tabs > li')
function myTabClicks(tabClickEvent) {
    for (let i = 0; i < myTabs.length; i++) {
        myTabs[i].classList.remove('active')
    }

    const clickedTab = tabClickEvent.currentTarget
    clickedTab.classList.add('active')
    tabClickEvent.preventDefault()

    const myContentPanes = document.querySelectorAll('.tab-pane')

    for (let i = 0; i < myContentPanes.length; i++) {
        myContentPanes[i].classList.remove('active')
    }

    const anchorReference = tabClickEvent.target
    const activePaneId = anchorReference.getAttribute('href')
    const activePane = document.querySelector(activePaneId)
    activePane.classList.add('active')
}

for (let i = 0; i < myTabs.length; i++) {
    myTabs[i].addEventListener('click', myTabClicks)
}

const imgURL = chrome.runtime.getURL('images/BDB-ICON256.png')
document.getElementById('logo').src = imgURL