[TOC] ## setBadgeText 添加下表 ``` //显示 chrome.browserAction.setBadgeText({text: '2'}); chrome.browserAction.setBadgeBackgroundColor({color: [255, 0, 0, 255]}); //隐藏 chrome.browserAction.setBadgeText({text: ''}); chrome.browserAction.setBadgeBackgroundColor({color: [0, 0, 0, 0]}); ```