we have a site that is running on Jquery and Backbone.
But it is rather slow on the mobile, but i do not want seperate bases for the desktop and the mobile.
I was wondering if jQmobi runs well on desktops as well? I do not care about supporting IE8 and below.
It's webkit only, so if you only care about Chrome/Safari it works fine, but it does not work on FF/Opera/IE currently.
note (I'm the lead dev. I use Chrome desktop for development then test on device)
Related
I have been trying to google around for a few days to find some kind of answer, but is their a difference between how iOS mobile devices understand JavaScript, vs Android?
I currently have some code that works as expected on Android (Chrome/Edge), and on Windows (Chrome, Edge, IE 8). But once we get to iOS devices, it doesn't work as expected.
I also tried to see if I could find an emulator for iOS mobile, or just downloading the mobile Safari browser, but wasn't able to find one (that didn't have a cost related to it).
I found the issue, it was related to the selectors in the code not being completed - Chrome got it, but safari didn't.
I have a problem with the https://konfiguratorszkolen.pl/ webpage - it works fine on desktop, but breaks on mobile devices.
On mobile, it loads at first and everything looks fine, but after a 1-2sec it shows "aw, snap" error. I've checked it only with Chrome and Safari on iPhone, but I believe it's a general problem.
I've already checked the website on
https://search.google.com/test/mobile-friendly
and
https://developers.google.com/speed/pagespeed/insights/
and the result are alright (mobile performance would be better).
What might be the problem? How can I debug this issue on mobile (of course works fine on a desktop browser)?
Here is the repository (it's only a code look-in): https://github.com/KamilSobieraj/Konfigurator_szkolen
What you're looking for is called remote debugging and is available for firefox, chrome and there's even solutions to debug iOS safari from your computer (no Mac needed).
I am using polymer paper elements in my polymer app. Its looking great in all desktop browsers. I tried this demo in all browsers. It working nice in some android phones (samsung s4). But in some android phones, I could not see anything (Tested using chrome and default android browser on samsung gt i9070, Micromax A90). I tried to load URL of mentioned demo on android webview, It was not working in many phones (Micromax canvas A114).
I gone through browser compatibility page Which shows, It supports in chrome android. but not observed by me. Is this observed by others ?
I used the worderfull javascript library called raphaeljs on my website to draw maps, animations and animated functionalities. I have noticed that the script using this library work perfectly with iPhone but not with Android.
Can someone confirm this (just going on the demo page of raphaeljs will tell you if it works of not) and if it doesn't, does someone has any idea why, and what could be tested.
Thanks
The default Android browser did not support SVG until they recently re-introduced it with Android 2.3. One workaround is to use Opera Mobile (free from the Android Market) which will work whatever the Android version.
EDIT: My mistake, it's Android 3.0 (Honeycomb) that added SVG support in the default browser.
2ND EDIT: Better add a disclaimer that I work for Opera. There may be other non-default browsers that support SVG (but I haven't tried them).
Actually SVG is supported by Android since 2.0 I think (with WebKit, default browser), it's just not enabled by default : http://jindroid.com/2010/02/15/svg-support-on-android-webkit/
There's a patch you can apply (quite hard to do though) to enable it but I would advice you to download Opera or Mozilla Firefox for Android (via Market), which also supports svg quite well (I tested FF4 with Raphael JS).
Regards
The pages in question contain a lot of javascript and CSS. How well are these supported by mobile platforms generally?
Is there a browser emulator (or equivalent tool) to assist testing?
Opera has an option to view pages as through a mobile device. I've found it useful in the past.
I can tell you that Apple's Mobile Safari on the iPhone renders Stack Overflow perfectly, which I find rather amazing.
This is a site for programmers, not average users, so we accepted a lot of JavaScript dependencies.
I do wish more mobile devices had browsers as powerful as Mobile Safari. I hear good things about Opera Mini as well.
One example:
The standard BlackBerry browser on my BlackBerry 8130 (Pearl) seems to ignore both CSS and JavaScript when loading my home page.
I also installed Opera Mobile on this device, which renders the CSS but not my jQuery hover effects. It does understand some jQuery - for example, I have a form validation that does a show() of error messages if validation fails. That works in Opera, although without the animation effect.
The safest thing to do for mobile browsers is to design pages that degrade gracefully without JS or CSS. It's up to you whether that's worth the effort or not.
In a few years, hopefully the only rendering differences will be the screen size limits of the phones.
You can install Opera Mini on an emulator like the Java WTK and test mobile rendering on a PC. One drawback is that Opera Mini still works through a proxy, so debugging local files/sites won't work - you have to upload your site to a world-accessible server.
Just google it.
It depends entirely on the phone. If you want to support every single device out there, don't even bother with CSS or JavaScript since neither will work (or will do something completely non-standard) on 99% of devices. If you are only targeting high-end devices, like the iPhone or the latest Series 60 Nokias, you should be able to get away with limited JS and CSS.
Some browser emulators that I know of:
Openwave.
Nokia tools
There are many more manufacturers that simply do not have any tools at all (I dare you to try and find a developer site for LG) so you need to get access to the physical handsets if you want to be sure the site appears as it should.
DeviceAnywhere is a superb tool if you have the cash. It was extremely laggy the last time I used it about a year and a half ago. Plus it is pure Java so is a dog on any machine. But it is arguably the single best mobile development tool available and, believe you me, I've tried a lot.
BlackBerry devices with OS 4.5 or older will not handle Javascript or CSS very well, if at all. Devices with OS 4.6 and higher (Bold, Pearl Flip, Storm, etc..) come with a new rendering engine which has much better support for Javascript, DOM, and CSS. It's not perfect but it should render most pages quite well. You can download the BlackBerry simulator for these devices from their developer website and try it out. Since it runs the same code as on the actual device it's an excellent representation of what you can expect to see on-device.