When the internet connection is unavailble, and we try to browse to Gmail when it had opened earlier, a message can be seen:
Gmail
The app is currently unreachable.
This same way also with Youtube.
In the Gmail offline message, I saw this attribute in the body tag:
jstcache="0"
How can we implement such a page when the page/browser is offline ?
They're using offline browsing, another new feature in the HTML5 spec. Take a look here: http://diveintohtml5.info/offline.html
It enables you to define certain assets on your site, using a manifest, that are cacheable. The browser will save them and display accordingly whenever the user is offline.
Related
I'm sorry. Because I am using a translation machine, understanding may be difficult.
It is a web developer working in Japan.
If you do the following operation, a bug will cause a bug in the instagram.
Send the URL in 「direct」 in the instagram.
(iPhone Application)
(There is a form with in the URL.)
(LIKE http://nervgh.github.io/pages/angular-file-upload/examples/simple/)
Click URL from the 「direct」 and the URL opens in app-in browser.
When uploading a file (image) with Form, the page will be reloaded and the entered file will be deleted.
You can upload the same URL in public browser without problems.
We could not add multiple or accept = "image / *" attribute to .
File upload control not working in Facebook In-App Browser
It is an innovative function of my web application and I really want to fix it
Is not there any good way
Ethics aside, how could I run a chrome extension on a website without it being detected by that website?
As long as you don't modify the DOM, don't respond to any message passing from the site, and don't make any extension assets web accessible, I'm not aware of any way for the site to tell. The JavaScript runs in a different context that the page doesn't have access to.
I'm making an offline webpage that automatically logs into an online website.
The website uses ssl (https) and to login it uses a form (post variables)
The problem I'm encountering is the following:
The site only accepts my offline form, when I open the online login page first.
This is because the website uses (server-side) sessions which are made when opening the first page. (The purpose of the session is to detect a time-out)
When I first open the online website and then run my offline page everything works fine.
So I need to make my offline webpage open the online website before posting the form automatically.
I tryed this with an iframe, but this doesn't work in internet explorer, as it is a https website. (It does work in Chrome, firefox,...)
I was wondering if Ajax could send a https page request before posting my form. But I guess not as it is https.
Does anybody know a method to send a https page request just like the browser does, but without showing it's output? Afterward I can automatically submit my form.
Thanks in advance!
Internet Explorer treats iframes from other domains as third party content, and uses a separate set of security policies for them. The security zone settings are also in effect between file:/// "local machine"/"offline" webpages and "internet"/"online" webpages. Cookies are usually blocked from third party content (depending on your settings), which means that the unique session key set in the cookies won't be saved. Without this key, the site you are trying to log in to will "forget" your session/login.
Cross-domain AJAX request are also affected by security zones and cross-domain policies, but the settings may differ between IE versions.
There are ways around the limitations, using P3P policies, if you control the target web page. Cookie blocked/not saved in IFRAME in Internet Explorer shows how. But, if you do own the web page, it would be better to enable or implement your own "remember me" feature.
In your case, depending on if you are the only one to use your offline autologin webpage, perhaps allowing third party cookies in Internet Explorer will help. See Options > Privacy > Allow all cookies (or in a similar). This will allow others (mostly ad companies) to track you all over the internet though.
If the purpose for your autologin page is testing, rather than actually using the browser as a human being, perhaps you can automate both logging in and testing?
Can I create a plugin or an extension for Google Chrome MOBILE (Android Google Chrome)?
If not, can I create an extension for Google Chrome (desktop), which will add a button in Google Chrome bar. This button will open the page in another web browser (in my own web browser), so, this button should launch my own web browser.
Extensions are not supported, see: https://developers.google.com/chrome/mobile/docs/faq .
Specifically:
Does Chrome for Android now support the embedded WebView for a hybrid native/web app?
A Chrome-based WebView is included in Android 4.4 (KitKat) and later. See the WebView overview for details.
Does Chrome for Android support apps and extensions?
Chrome apps and extensions are currently not supported on Chrome for
Android. We have no plans to announce at this time.
Can I write and deploy web apps on Chrome for Android?
Though Chrome apps are not currently supported, we would love to see great interactive web sites accessible by URL.
You can use bookmarklets (javascript code in a bookmark) - this also means they sync across devices.
I have loads - I prefix the name with zzz, so they are eazy to type in to the address bar and show in drop down predictions.
To get them to operate on a page you need to go to the page and then in the address bar type the bookmarklet name - this will cause the bookmarklet to execute in the context of the page.
edit
Just to highlight - for this to work, the bookmarklet name must be typed into the address bar while the page you want to operate in is being displayed - if you go off to select the bookmarklet in some other way the page context gets lost, and the bookmarklet operates on a new empty page.
I use
zzzpocket - send to pocket.
zzztwitter tweet this page
zzzmail email this page
zzzpressthis send this page to wordpress
zzztrello send this page to trello
and more...
and it works in chrome whatever platform I am currently logged on to.
Some extensions like blocksite use the accessibility service API to deploy extension like features to Chrome on Android. Might be worth a look through the play store. Otherwise, Firefox is your best bet, though many extensions don't work on mobile for some reason.
https://play.google.com/store/apps/details?id=co.blocksite&hl=en_US
Just use a different browser.
Follow the steps given below to install Chrome extensions on your Android device.
Step 1: Open Google Play Store and download Yandex Browser. Install the browser on your phone.
Step 2: In the URL box of your new browser, open 'chrome.google.com/webstore’ by entering the same in the URL address.
Step 3: Look for the Chrome extension that you want and once you have it, tap on 'Add to Chrome.’
The added Chrome extension will now be automatically added to the Yandex browser.
I imagine that there are not many browsers supporting extension. Indeed, I have been interested in this question for the last year and I only found Dolphin supporting add-ons and other cool features announced few days ago. I want to test it soon.
I have page where RSS icon is present. I want that when user clicks on RSS icon it will check in chrome browser that, whether that RSS reader chrome extension is installed or not
I am trying to achieve this by using chrome extension methods, mentioned here.
I tried something like this but it is not working:
var port = chrome.extension.connect("nlbjncdgjeocebhnmkbbbdekmmmcbfjd");
To use this API you need to be either an extension or a web application having the necessary permissions - normal web pages cannot access it. However, detecting whether an extension is installed in Chrome is still easy:
<script src="chrome-extension://nlbjncdgjeocebhnmkbbbdekmmmcbfjd/manifest.json"
onload="alert('installed')" onerror="alert('not installed')"></script>
This uses the fact that the extension's manifest.json file is located under a predictable URL and that web pages are allowed to load this URL. Of course, this isn't an officially documented approach but rather a loophole and a privacy issue. So be prepared for it to stop working in some future Chrome version. At the moment it works however.