I'm working on a webpage that has to work offline when it's finished. No XAMPP or other services available, so PHP is no option.
It has to create a new file, edit a filename (which would be the best solution) or move a file into another directory. This action has to be called from a function in jQuery.
I've read that Python could to this but as long as I read Python needs a web framework and a configured Apache as well, so if it's right Python is no possibility for me as well.
Is there any way to do this with JavaScript / jQuery or anything else which works offline?
No. It won't work by Design. Imagine, you visit a Website and it would install virus.exe into your Windows Directory (For example Autostart).
Html Pages are for Displaying Informationen to the User. Javascript is supporting it with dynamic Features. The Browser grant Rights for Loading other Information and nothing else. Everything which would affect the System, could not handled by Script.
If it should run from Web, you need a Plugin (Like Java). In your case (Offline Use) consider to write a Desktop Client (C#, VB.NET, Java, C++).
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We are currently looking at porting a enterprise silverlight application over to html5. The major roadblock that we have hit is the ability to open files from the user's local disk. Currently they have a document library which just links to files on their computer that they can open from within the app and view or print out. All that I read is that you can only access the local sandbox of the web app with the html5 file api's. We want to load these files from code.
Does anyone know of any workarounds to this?
Thanks
There is no way for html5 to access local file without user selection. But FSO: FileSystemObject works for IE and MAYBE could be regarded as a work around. But still there are some requirements to meet.
It is possible to use chrome's filesystem API to access files on a users local filesytem. So you'd have to be willing to make this a chrome only application.
Using java you can create a "Signed" applet which has access to the local filesystem. (if the applet is signed you can request filesystm permissions)
then there is a tutorial for accessing methods of your java code directly from javascript here: http://docs.oracle.com/javase/tutorial/deployment/applet/invokingAppletMethodsFromJavaScript.html
you should be able to perform something similar from silverlight.
There is no workaround in pure HTML5/Javascript. You need the use of plugins, such as Java or Silverlight (maybe you shouldn't port it after all). As for workarounds, HTML5 gives you an easy way drag and drop multiple files that you could transfer on the server and then display back to your users. Another workaround would be to install a custom agent (a software with only a tray icon) that would send the information about the current user "document library" to server and then again, you could display it back to the user.
Note: I've heard somewhere that browsers will eventually stop supporting plugins. http://www.howtogeek.com/179213/why-browser-plug-ins-are-going-away-and-whats-replacing-them/
Ya, I agree with Markain. However, if you were to limit your audience solely to chrome users, I daresay, you would most likely use some of your users. If Huazhihao is right, then your number of leaving customers should decrease but users who regularly use firefox won't be happy. Overall, I think that this will not work. Otherwise, there would be too many websites that trashed your hard driver (or at least wherever you have the rights to edit/delete files). I think it would be best if your product was setup to synchronize the file whenever an internet connection was detected and a change was made to the file. That way the user would not need to visit the website whenever the file was uploaded. If this is some kind of an error file, then it would be most beneficial if you were to make a link in the application that when clicked, would upload the file to the website and the website were to do whatever was necessary. If this is a purely online thing, then I don't see what business you would have looking through other peoples' files =-). Hope I helped!
Operating system : Windows 8.
Input-from : A text field from a html page .
Input-type: text.
Output : the file that was searched.
What I want : I want the user to enter some keywords and have JavaScript search the user's local files...
Is there any way? or A javascript Library?....
And how I can query the file system about the files using Javascript..in Windows..
EDIT::
Thanks everyone for the reply...
The way I get it is ,either I have to develop my own browser based in Java that has sufficient permissions.. or
I would have to implement a file crawler that indexes everything that sends that file to the a server , so that javascript can then access it through xmlhttp requests to the server ....
This was just a curiosity and I don't want to expose anyone's personal files on the Internet.
A fun project.. That all tinkered in my mind.
This is not possible from a web page because of the browser's security restrictions. You could access the local file system with Node.js or an Electron app, but I don't know if that would suit your use case
No. That's simply not possible and even if it is, it should not be used, as it would make one's local file system open to various threats because you are directly exposing your machine on the internet. That's sufficient enough reason for a webapp not to access one's local file system in any manner whatsoever.
P.S: If you really want it, There are a few third party libraries which use Sandboxed file systems. You can try that if you want.
I havent tried it personally, but found the below link via quick googling so i am not sure if its officially supported up until now.
https://www.html5rocks.com/en/tutorials/file/filesystem/
Use <input type="file">, which implements ability for user to select file from local filesystem.
I'd like you to give a tip for my issue. I'm pretty new to javascript so I don't have such overview.
I have a desktop application - it's basically a storega for data (+ some GUI). And there's a set of Javascript files, which are ment to get data from desktop application.
These javascript files runs in every browser - for each browser I've made a extension wrapper. There is also a testing java-webkit browser, which injects these files directly (so no extension's API).
So I need to create communication API between Javascript and desktop application, which is able to run in every environment (browser-specific implementation would be too "expensive" to maintain).
So I was thinking of sockets. But there is only Websocket protocol support in javascript. Client looks simple, but I'm afraid that server-side would require too much work and dependecies.
Could you give me a tip, for other technologies, which compatible with my requirments?
And second question - to the sockets - would it be even possible to access socket on "localhost:port" from these's javascript files, when they are Content scripts running in page's context?
Thank you for advice.
Sockets is the way to do it. #Luckyrat has provided some code on how to do it from a Firefox Addon:
https://stackoverflow.com/a/17459064/3791822
I was wondering I have PHP based server side stuff that accepts ajax requests and sends back JSON for JS. And I have HTML and JS based "client" now I would like to create exe(windows aplication) that would look the same as the "client" in browser but without browser. Preferably somehow grab that HTML and JS and "compile it" to regural client that would still send out AJAX calls and procesing JSON data.
Edit:
To clarify things:
Server(on webserver) is PHP procesing incoming AJAX calls and diplaing JSON as result.
Client(what I want to convertt to exe) is HTML and JS(Jquery) page(application).
I want for user to have option two to dowload client for windows so he/she dont have to use browser.
With https://electron.atom.io/ from Github you can develop Windows, Mac and Linux applications with Javascript, Html and CSS. You can also build mobile application with your web development skills. https://cordova.apache.org/.
You can use Electron, but if you just want something quick and easy to use, try Scriptonit. It's exactly for this kind of use. (Check out the documentation and the examples to see if this is the one for you.)
It's basically one exe plus a few sidecar files in a folder called app/, then it just works like a local browser without the frames & head. Also, it can access local files and run OS commands, even capture their output.
Side note 1: Yes it's mine, as you can see on the link - but no, that's not why I'm recommending it
Side note 2: It's 0.9 so it's not perfect, let me know if it misbehaves.
I don't think you can make a desktop application with markup languages. but then am also a newbie in this stuff but what I think you need is to develop a GUI in a programming language like java for example Swing docs.oracle.com/javase/tutorial/uiswing/ to mimic the apearance of your webpage. Then connect to your server by socket programming.
I currently have a web app that uses ActiveX / JScript to read files and to read the registry for a web page. Originally when designing the page, it was supposed to be on a site that only supported IE...then things changed and it is no longer that way. My question:
HTML5 is able to read files. Is there any way to read registry entries outside of ActiveX and internet explorer using javascript/html? I'm trying to avoid having to port the entire applet over to use Java, but that may be my best method.
The page makes no modifications, it only reads text files and registry entries.
It is not possible without a third party plugin.