473,698 Members | 2,643 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

Browser Quirk: onload/onunload do not fire on back/forward/refresh (Opera)

16,027 Recognized Expert Moderator MVP
onload and onunload events do not fire when going back, forward or refreshing the page


Any code using onload or onunload, e.g.
Expand|Select|Wrap|Line Numbers
  1. window.onload = init;
where init() is a function which initialises some variables (for example).

There is no solution because according to Opera developers and users this is not a bug. Opera maintains the runstate of scripts, so it's as if we never left the page when we return back to it. According to Opera, onload should only fire when loading the page for the first time and onunload should fire when unloading the page completely, not when just leaving the page by pressing the back, forward or refresh button. Refresh is considered to be a reload, not an unload.

This should be something you should be mindful of when depending on onload and onunload in your code.

Obviously, if onunload does not fire, onbeforeunload (which is a non-standard event supported by some browsers) will not work either.

More Bugs, Quirks and Inconsistencies
Aug 18 '07 #1
0 11845

Sign in to post your reply or Sign up for a free account.

Similar topics

by: pmelanso | last post by:
hello, I want to create back and forward buttons on my web page. I didn't have a problem with that... the thing I am having trouble with is I woudl like to display "disabled" images when there if there isn't a page to go back/forward...how would I go about doing that??? Pam
by: Brad | last post by:
I created a base page class which sets a response filter and the filter injects additional html into the response output stream. The filter works fine and everything works as expected except for the following quirk: When I navigate my browser to another url (a link in the page, a browser favorite...it doesn't mater) and then use the browsers (IE 6) Back or Forward buttons to go back to my filtered page the additional html I had added...
by: Terry Olsen | last post by:
Is there any way to disable the client browser "Back" and "Forward" buttons while on my site? Or how would I go about knowing that a page hit is caused by a back/forward navigation? I have discovered that my web app is definately NOT Back/Forward safe. It's really messing with my SQL data bigtime. Thanks.
by: Johnny Emde | last post by:
Hello I want to avoid users to be able to click back/forward in IE. Is it possible to like clear the 'back-container' and ofcause the 'forware-container' or just disable the buttons. I'am using C# Kind regards
by: Badass Scotsman | last post by:
Hello, I have an application which should never allow the back button to be pushed without refreshing the previous page. For example: Step 1: User fills in form.html and presses submit Step 2: User see's results.html and clicks back to amend form
by: whapts3 | last post by:
I'm putting together a rather dynamic page (AJAX/all-that-mess). So... to go between different sorts of content on the page, I have it set up something like this. <a href="#10" onclick="loadFragment()"> ... </a> <a href="#20" onclick="loadFragment()"> ... </a> where loadFragment is a function which does something based on the #20 which is now appended to the document's .location.
by: sahaja108 | last post by:
Hello. I was wondering if it possible to detect a Browser Back/Forward by PHP. I mean. I am in page A, I go to page B and then I click on the Back button and I return to A. Does it exist a php function that detect that I have used the Back button? Thank you very much
by: John | last post by:
Hi everybody, for my web-application (it must currently work only under IE6) I have a servlet that intercepts user's HTTP GET requests for a typical search result page, which contains a paging mechanismus for navigating between the result pages (e.g. << 1 2 3 4 5 ... >). When the user clicks on this navigation, the JSP send a GET request to a servlet wich does some buisiness logic - in particular it logs (with log4j) how many times an...
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.