Elements are invisible on Blackberry OS5 - javascript

I've developed a responsive-based website for a client, however upon testing on Blackberry OS5 (old, I know, but it is a requirement of the job) we have found that a lot of the elements on the page are invisible. I say invisible because the spacing is there where the elements should be, there are just blank spaces.
I started to debug the issue, and I found that disabling support for JavaScript in the browser causes the website to render fine. This led me to think that some of the JavaScript on the website was causing the issue, however upon removing all references to JavaScript on the website, the issue still occurs.
Any ideas?

Related

Why does Firefox lag using NVDA on a page setting textContent?

Recently I've been testing my website using screen readers and ran into a page that lags like crazy when using NVDA. More specifically:
All browser actions are substantially delayed, but NVDA itself runs perfectly fine
For example, the page normally loads in its entirety in less than a second, but with NVDA active, the first image can take several minutes to render
Refreshing the page takes several minutes to execute
Even switching or closing the tab takes several seconds
After some extensive debugging, I isolated the issue into a rather specific set of criteria causing the slowdown:
This only happens on Firefox (I'm currently on Firefox 90); Chrome and Edge are fine
This only happens with NVDA; VoiceOver on Mac is fine even on Firefox. I do not have JAWS.
The action causing a slow down is setting an element's textContent on every requestAnimationFrame, so it's happening dozens of times per second
I am uncertain if this is experimentally significant, but I'm running on Windows 10 Home
I managed to scrape together a minimal CodePen example. I used CodePen here because the simplest way I could replicate the issue was by refreshing the page. In the example is a refresh button that activates a spinner, so if the page is fast the spinner will show up for only a brief moment; if it's slow then you'll get to observe the spinner in all its glory.
What I see when I try to refresh:
So while I isolated what is causing the issue, I have no idea why this is happening and hence how to solve my original page's problem without deactivating the widget outright.
What might be the underlying cause(s) of Firefox/NVDA slowing down on a page setting textContent?
Is there an alternative to setting textContent that I can or perhaps should consider?
Is this perhaps an issue that should be filed directly with either Firefox, NVDA, or both?
Thank you!
Addendum:
NVDA Github Issue: This open issue indicates long pages are slow to load, which may be related to my problem
My Website's Page: The page on my website I'm talking about

Odd dropdown/select behavior in phonegap on iOS

We have a phonegap/ionic application targeting iOS. We have been testing with the ipad air simulator (xcode) and ipad air (10.3.3), ipad Pro (11.0.3).
The app is an ionic (v1) app that downloads and loads stand alone html files (the files contain css, html, js in one doc). The documents are typically long forms. In all test environments we are getting odd behavior with selects/drop downs.
When you click/tap on a select the options will appear correctly.
Then when you click/tap somewhere else, blank space or another input field you will usually get the select options bubble again but it will be empty.
In the above image I made my selection from the options and then clicked into the next field.
This was intermittent at first and now it seems to happen all the time. It seems like it has something to do with losing focus but I am unable to see why this is popping back up. I haven't found anything very useful from searching online in regards to this problem.
UPDATE 11/7/17
After more thorough searching this seems to be due to building the app with xcode 9 and/or the use of UIWebView vs WKWebview. I also looked through the code more to see we were already using WKWebView not UIWebView and the problem is still present. As someone mentioned in this thread.
Good thing is Cordova has support for WKWebView too. You have to install the plugin: cordova-plugin-wkwebview-engine

CSS completely stopped working on my Blogspot.com site

I've been working on a CSS / HTML drop down navigation for my blogspot.com site. After coding it a few hours I had accidentally closed the tab to find out no matter what or where I tried the CSS on blogspot, the CSS wouldn't work again. Now, the HTML/CSS works anywhere else, just not on blogspot anymore.
These are the things I did:
1. Created a entire new blog under the same account, then applied
html/css
2. Cleared cookies, cache and restarted browser
3. Tried multiple browsers
4. Used stylish extension to override
5. Used console in firefox to edit HTML on other sites and added my
code to see if it worked elseware
6. Used a different computer
7. Used mobile network instead of ISP
Despite doing everything pretty much to get the css/html to work blogspot, it will refuse it now no matter what. I am guessing it is obviously an issues with blogspot.com such as a glitch or bug that I may have now caused. It also shows a lot of CSS code struck out in the styles inspector when you inspect a site via right-click.
I dab in javascript / jquery sometimes and I am wondering if there is a way to force my CSS to force override.
CSS/HTML http://jsfiddle.net/rpksx66u/
My blogspot site: https://vitalintel.blogspot.com/
Im about to pull my hair out.
update: so I moved the css/html/script element to another part of the page and it works. When the element is placed in the Cross-Column's sections in layout, it refuses to use any CSS.

IE10 IE11 displays "This page can't be displayed" On large DOM - works in firefox

I am working on an web application in MCV asp.net that needs to work in IE. Loading the application with data for some customers we get the "The page can not displayed" using IE10 and IE11.
More details are
It works in Firefox.
The error is only there for large pages = larger DOM
An exampel of a large page is a body of 4.6MB measured by Fiddler
For small pages there are no problems
The error page apears instantly when loading a customer
We have tried the following, but with no luck:
Removing stepwise elements from a big page and at some point it will start working, since it just removing sets of the same elements, nothing is being removed that could couse the problem - maybe its something with the size of the http-response?
Changed some IE settings
Stripping away all Jquery and CSS, to see if it was some DOM traversal issues
Tjekking the http-response to look for any bugs - non found
Google around seams that IE will show this page in some situations, but not found anything to fix this problem, where the application works on some pages but not on others.
Any suggestions?
The answer to why it does not work in IE is that you can not have more then about 200 AntiForgeryTokens, above that will make IE not load the page.
The quick solution: reduce the number of AntiForgeryTokens, we could do it by not having a delete form per element.

FF - Iframe in contentEditable are not loading javascript

I'm currently trying to put together a rich text editor that includes widgets from a different location then the site the rich text editor is on. I'm doing this by providing an Iframe in the content area that is placed at the cursor.
Now the idea behind this instead of providing some kind of placeholder until they finish editing is so they can see what they are talking about while they type.
Now the iframe works perfectly fine in Chrome loads the content as expected, but in Firefox it seems to have disabled javascript in this case (notice none of the script files being downloaded), which is an issue as the widgets are extremely javascript heavy and don't function without it.
I have provided below a JSFiddle showcasing this issue, the site im loading in the iframe is just a javascript game but you will see it doesn't work in firefox but its okay in chrome!
http://jsfiddle.net/reefbarman/2uYja/2/
Any help is appreciated
Scripts won't be executed when designMode is activated (source). Internet explorer was the first browser to add this feature, and Mozilla implemented a similar function, heavily inspired by Microsoft.
Your code functions in Chrome, because Chrome has implemented designMode in a different way.
Well after some research and experimentation I was dealing with two different issues that looked like one.
Firstly I made a change to the rich text editor I was using to use contentEditable only as this seems to be the standard going forward and its a heavily html5 app im working on. So with designMode = 'Off'; the iframe would load in normal situations. But I had a strange issue where adding the iframe to soon after adding another element to the editable area caused the iframe not to load, so just delaying the add of the iframe by some time allowed that dynamically added iframe to load!
Problem solved!

Categories