How to know if the browser has lost focus
15692
Is there a way to detect if a browser window is not currently active?
44382
If a DOM Element is removed, are its listeners also removed from memory?
134295
How to find where browser breaks a paragraph of text
157649
Detect Safari browser
87247
Using jQuery to test if an input has focus
795
How to check if element is visible after scrolling?
116352
How can I make the browser see CSS and Javascript changes?
35455
How to detect if JavaScript is disabled?
6155
Detect browser or tab closing
150596
Monitoring when a radio button is unchecked
112055
Browser detection in JavaScript?
113150
Is there an event for when a Chrome Extension popup is closed?
77441
How to listen for changes to the title element?
65701
How do I detect when a web page is loaded?
147650
Can't tell which tab is active anymore
151369
Catch browser's "zoom" event in JavaScript
75901
How do I set focus follows mouse?