I have a tabbed menu system that uses Javascript and Iframes which load up individual asp pages depending on which tab is clicked. I have been asked to add some functionality which warns a user of any unsaved changes before exiting the current document or naviagating away. I found an excellent article at http://www.4guysfromrolla.
This Question has been solved and asker verified All Experts Exchange premium technology solutions are available to subscription members.
Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.
If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.
Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.
Save solutions to your questions, answers you’ve discovered through searching plus helpful articles in your personal knowledgebase for easy future access.
Access the answers to your technology questions today.
30-day free trial. Register in 60 seconds.
Members of the expert community talk about why the experience at Experts Exchange is different than what you will find anywhere else.
Try it out and discover for yourself.
30-day free trial. Register in 60 seconds.
Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.
When running the application the script that checks to see whether the page has been altered (ie a dirty form) runs fine if i navigate away from the page. But I needthe same to happen when clicking on a different tab eg. When I click on another tab the code first checks to see if anything has been edited and then warns the user if it has.
Yes but something has to change the contents of the iframe -- whether a link click, or a tab click, so if you want to check the currrent iframe content for changes, you need an onClick() handler on that link. Doesn't matter if it is in the parent page, you still address the iframe like this --
<iframe name="two" id="two" .... etc > content
<form name="second"> <input name="total" value= "0.00"> </form>
</Iframe>
javascript from parent or other iframe on page, or same iframe on page --
function checkForm () {
if ( document.two.second.total.
alert ("you have changed the total, please save the form before moving");
return false;}
else { return true }
}
You check the form fields in that iframe for changes and popup an alert --
with the onclick handler, you will return false if the fields have changed and true if not.
so wherever you have this onClick() check, you will decide to move based on the return --
if (onClick ( checkForm() ) -- then change page, else do nothing.
Business Accounts
Answer for Membership
by: scrathcyboyPosted on 2008-09-20 at 16:53:36ID: 22532411
"The onclick event for the next tab is handled in the parent page so Im stuck here. "
From your description, this is the only problem you are having, but you say you cannot change the parent page, so what are you trying to do that cannot be done, because the parent page is stopping you?