Firefox Add-on Tab Events

main.js

var tabs = require('sdk/tabs');

function onOpen(tab) {
  console.log(tab.url + " is open");
  tab.on("ready", function() {console.log(tab.url + " is ready")});
  tab.on("loaded", function() {console.log(tab.url + " is loaded")});
  tab.on("pageshow", function() {console.log(tab.url + " is pageshown")});
  tab.on("activate", function() {console.log(tab.url + " is activate")});
  tab.on("deactivate", function() {console.log(tab.url + " is deactivate")});
  tab.on("close", function() {console.log(tab.url + " is close")});
}
tabs.on('open', onOpen);