How to detect if they left the Webpage?

Question

我需要知道用户是最小化网页还是浏览器中的另一个选项卡，这可能吗？

Answer 1

Afraid not, the closest you can get is blur/focus on the window object like this:

$(window).blur(function() { console.log('left'); });
$(window).focus(function() { console.log('came back'); });