How does Facebook get the full path of my local file? - javascript

If you click on the Post on the top right, then drop an image onto the box, Facebook will fail to recognize it as an image and tries to read it as a link. This is not the main point though.
The weird part is that it knows what the fullpath is.
This shouldn't be happening since Chrome is sandboxed, and every path, in theory, should be changed to "fakepath" for security reasons.
Somehow Facebook managed to do that. But the question is, how?

Windows XP sends the whole path with the content type text/uri-list.
Here's a snippet that reproduces this fact:
<textarea ondrop="console.log(event.dataTransfer.getData('text/uri-list')); event.preventDefault();">
</textarea>

Related

Adobe Animate .fla Conversion and publish to HTML 5/JS

Adobe Animate .fla Conversion and publish to HTML 5/JS
The previous person we had doing this task is no longer with the company, and the instructions they left are minimal. They are probably enough to jog their memory but are not helpful for someone attempting with no Flash/Animate experience. In our attempts we get a few different results
The file works correctly in IE but not in any other browser.
The file opens in IE but cycles through each frame, never stops, and doesn’t load in any other browser.
The file opens in IE but has no animation, doesn’t respond to clicks, and doesn’t load in other browsers.
The file doesn’t open anywhere
With our lack of experience with Flash/ Animate, we can’t tell what is the problem. We did try using a file that is unmodified and has a current working HTML5/JS publish, however, when we publish that same file we get the same results as above, while the original works fine. We believe that it something in the publish of the JavaScript causing the failure. I attempted to take bad.html and bad.js and overwrite bad.js with the content of good js. This worked, it’s the wrong data, but it worked and is why we believe the publish of the JavaScript is the issue.
The instructions we are following are as follows.
Open .fla in Animate
Click File --> Convert to --> HTML 5 Canvas (save File)
Click File --> Publish Settings
Basic tab
Uncheck Loop Timeline
Check Export images assets (as spritesheet)
Uncheck Export Sounds
Uncheck Export CreateJS
HTML/JS tab (No changes)
Image Settings Tab (No changes)
Click Publish
I have shared the .fla at https://1drv.ms/u/s!ApKpIVR_uf25hd9MF6pzZPKZjukwQw?e=oEzxRV in the hopes that someone can help and spot the error of our ways.
Thank you for any assistance.

Loading gif in page:failed to load resource Cordova

For some time I'm trying to develop my own app using cordova. The first page I created is the login. When the user clicks on the submit button I check the credentials by sending them using ajax. Meanwhile I want to display a loading animation,and I found how to do it:
$.mobile.loading('show')
It works..almost. It only shows a black circle on the middle of the screen. I checked the console only to find :
Failed to load resource
ajax-loader.gif (0,0)
I ran multiple test: I commented the security policy,copied the image in different folders,checked the spelling and finally created my own span with url(images/ajax-loader.gif) and ..it worked. Then I did the same thing with the original loader(I found its span in the DOM explorer) and added an inline style url(images/ajax-loader.gif)..it worked!
Finally I realised this:
It is like it tries to load the same image from two different sources. How can I fix it?
Other details:Jquery 2.0.0/Jquery-mobile 1.4.5
This is some weird behaviour still not explained-so ANYONE can post the correct reason/explanation for this- but I will post the fix.
I took a look at this post and thought to give it a try.
This is how the css looks like(I edited it in debug mode so it should be overridden) :background: url(.././images/ajax-loader.gif)
Now it works but the question IS still active.

Forced Image download - file extension missing

I got an AJAX function that loads a png from a canvas graph element and does (per user choice) open the image in a new browser window or force a download.
While the first works without a problem, I got a problem with adding the file extension to the download. Currently I simply get none, using the following HttpHeaders: image/octet-stream, application/download(force-download, x-download)
Gladly some SO user put a JsFiddle together. 1)
Question: How could I go and append a file extension (.png/.jpeg) to the forced download as seen in the JsFiddle example?
1) Sry, but I don´t know the User name anymore.
Unfortunately, with data uris, it is not possible to supply filenames. You should probably look at the HTML5 BlobBuilder API - http://blogs.msdn.com/b/ie/archive/2012/01/27/creating-files-through-blobbuilder.aspx
Even with BlobBuilder, I've found that only Chrome acknowledges the filenames you supply, not Firefox.

My javascript file is displayed as a single line of text in the chrome debugger. Why?

I seem to run into this randomly. It usually displays the file normally, but sometimes it's all scrunched onto one line. I can't figure out what's causing it.
N.B.: In the current version of Chrome, this is actually done by clicking on the {} icon ("pretty print") on the lower left of the developer tools pane.
Ah, figured it out. The line endings on the problem file got set to Mac format somehow, while the rest of the files were Windows format. Not sure how the format swapped but it's easy to convert back (in Notepad++ just go Edit -> EOL Conversion).
You already answered your own question, but this is a good place to note that Chrome (as of v12, currently in dev channel) has a built-in pretty-print function that can make quick work of the typical one-line JavaScript files that all well-behaved websites generate. In Web Inspector's Scripts tab, select a file via the usual dropdown, and right click on the source code. Selecting "De-obsfucate Source" will format the file in a reasonable way, and even allow you to set breakpoints inside the newly reformated code. It's quite helpful.

JavaScript file not updating no matter what I do

I have an external JavaScript file and whether in FireFox or Chrome, whether all browsing data is cleared, it will NOT update no matter what. I believe something happened when I made a backup of my file, which I simply added "_thedate" to the end of the name. Then Save As back to the original name.
Now I cannot seem to get rid of the old JS no matter what unless I change the name of the file, which I really don't want to do, or add the script to the PHP page, which crowds it.
Anyone know the solution to this?
You are sure you are linking to the same file and then editing that same file?
On some browser, you can use CTRL F5 to force a refresh (on the PC). On the Mac, it is Cmd Shift R
Firebug also has a net tab with "Disable Browser Cache".
But I want to give a warning here: even if you can hard refresh, how do you know your customers are getting the latest version? So you need to check, rather than just making sure you and your program manager can do a hard refresh and just go home and take the paycheck next month. If you want to do a job that change the world for the better, or leave the world a little bit better than you found it, you need to investigate more to make sure it works for your customers too (or else, sometimes the customer may call tech support, and tech support may read the script of "clear out the cookies and it will work", which is what happens to me sometimes). Some methods down at the bottom of this post can ensure the customers get the latest version.
Update 2020:
If you are using Chrome and the DevTools is open, you can click and hold the Refresh icon in front of the address bar, and a box will pop up, and you can choose to "Hard Reload" or even "Empty Cache and Hard Reload":
Update 2017:
If you use the Google Chrome debugger, it is the same, you can go to the Network section and make sure the "Disable cache (while DevTools is open)" is checked, in the Settings of the debugger panel.
Also, when you link the JavaScript file, use
<script src="my-js-file.js?v=1"></script>
or v=2, and so forth, when you definitely want to refresh the file. Or you can go to the console and do a Date.now() and get a timestamp, such as 1491313943549, and use
<script src="my-js-file.js?t=1491313943549"></script>
Some building tools will do that automatically for you, or can be configured to do that, making it something like:
<script src="main.742a4952.js"></script>
which essentially will bust the cache.
Note that when you use the v=2 or t=1491313943549, or main.742a4952.js, you also have the advantage that for your users, they definitely will get the newer version as well.
How about adding a '?2' to the tag?
<script src="a.js?2"></script>
The server should return the same file with or without the '?2', but the browser should see it as a different file and redownload. You can just change this query string whenever the file is changed.
adapted from: http://blog.httpwatch.com/2007/12/10/two-simple-rules-for-http-caching/
I've had this problem before, it's very frustrating but I found a work around. Type in the full address of the js file (i.e. yourhost.com/javascript.js) and load it. You will probably see the old version load. Then hit f5 to refresh that page and you should see the new version load. The js file will now be updated in your cache and the code should run as you expect.
The solution I use is.
Using firefox
1. using web developer --> Web Console
2. open the java-script file in new tab.
3. Refresh the new tab you should see your new code.
4. Refresh the original page
5. You should see your changes.
I had this problem and solved in Chrome by just disabling Cache:
- Click F12;
- Go at Network tab;
- Click on "Disable Cache".
A little late to the party, but if you put this in your html, it will keep your website from updating the cache. It takes the website a little longer to load, but for debugging purposes i like it. Taken from this answer: How to programmatically empty browser cache?
<meta http-equiv='cache-control' content='no-cache'>
<meta http-equiv='expires' content='0'>
<meta http-equiv='pragma' content='no-cache'>
Rename your js file to something else temporarily. This is the only thing that worked for me.
The best way around browsercaches is to append a random number to the path of the js file.
Example in pseudo code:
// generate a random number
int i = Random.Next();
echo "<script src='a.js?'" + i + "></script>";
This will make sure your browser always reloads the file, because it thinks it's a different file because of the random number in the url.
The server will always return the file and ignore what comes after the '?'.
In both Firefox and Chrome, that is really annoying, but because of their default settings which can be changed the following way and then they work. I tried in Chrome and Firefox both with same order of steps.
Press F12 (Open Inspector)
Click Network, and then click Disable Cache
Now click Clear icon. In Firefox, it shows as a trash bin icon on left corner, in Chrome it is the second left icon, in between 'stop recording' and 'Filter'.
Now press F5 or refresh the page
They do update the resources with their fresh copy as they re-download them.
In Asp.netcore we can use asp-append-version taghelper
<script src="~/js/site.js" asp-append-version="true"></script>
Are you 100% sure your browser is even loading the script? Go to your page in Firefox and use the console in Firebug to check if the script has been loaded or not.
I have the same problem for awhile, and manage to figure out... And my case was because I have 2 javascript with the same function name.
1.Clear browser cache in browser developer tools
2.Under Network tab – select Disable cache option
3.Restarted browser
4.Force reload Js file command+shift+R in mac
 
Make sure the fresh war is deployed properly on the Server side
I was going insane trying to get my js files to refresh and I tried everything. Then I did a header check and remembered I was using Cloudflare!
In Cloudflare you can use dev mode to disable proxy.
Don't forget to check any errors in webpack compilation. Sometimes the application.js in app/javascript/packs/ doesn't reload due to webpack compilation error.
When I run into this issue I try this sequence of steps:
Hard refresh the page.
Clear cache + cookies.
Add a static version to my script.
src="my-script-name.js?v=1"
If the above does not help, add a dynamic version to my script:
src="my-script-name.js?v=" + Date.now() + Math.random()

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