JavaScript to determine the page to close, page refresh implementation code

Source: Internet
Author: User
Tags close page

Today, because the project needs to determine the user to leave the page to determine whether the user's behavior is closed or refreshed

Although there is no direct method, but through a certain skill can also do

Have to sigh the power of JavaScript!!

Take a look at the code:

The code is as follows:

Window.onunload = function () {

var a_n = Window.event.screenx-window.screenleft;

var a_b = a_n > document.documentelement.scrollwidth-20;

if (a_b && window.event.clienty< 0 | | | window.event.altKey) {

Alert (' close page behavior ');


Alert (' Jump or Refresh page behavior ');



In fact, by leaving the page behavior time onunload trigger time to detect the window size of the browser at this time, according to the size of the user is to determine the refresh, jump or shutdown behavior.

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