So I would like to study websites and their code, do some changes - locally ofcourse (to learn). I know how to do it using chrome devtools - but I really like using vscode. Because live server is only for your local project, not one with the url. Even if I force the server to open a specific url, I can't edit it in vscode (I mean, not counting the devtools extension - because, its basically the same.
Even if I copy the css files in a folder, vscode does detect the file and opens it, but editing doesn't have an effect on the website.
Is there any way I can find out what the latest file Selenium downloaded was, and from where (what URL) it was downloaded?
I am fetching files from a large number of sites (that I do not control) by clicking on elements, and my problem is that I do not know how the files are downloaded. Sometimes it is just an <a> element, sometimes there is a Javascript event attached to some element, or form (not always obvious from inspection), and so on, and so on.
So I though the easiest would be to just do my clicks, and then check what landed in the download folder. But then I have no idea where that file came from, and I also need to store the url.
For files that can be displayed inline, I can, of course, open them in the browser and get the driver.current_url. This is very convenient for file formats where it actually works, so if there is a way to force e.g. Firefox or Chrome to open all files inline, that would also be an option. (I am aware of one such extension. That extension, however, requires some user interaction in a OS file dialogue window, and that seems like overkill here)
Possible solutions
Firefox: Read moz_downloads from downloads.sqlite, in the FF SQLite DB
Chrome: Read the corresponding SQLite db for Chrome/ium
Write browser extensions that modifies the mimetype of visited pages, so that all files are opened as plain in the browser, and the URLs can be accessed from there.
How I understanding selenium it only insert js to page, that mean that you can interact only with web page but not with browser futures.
But you can do like in this post How to access Google Chrome browser history programmatically on local machine if that files are in download history you can find them there.
I am trying to set up the mapping feature in Chrome canary. I followed the screenshots in this answer.
The main feature works, when I inspect an element, it points me to my local sass file and when I edit it, the local file safes, and the `sass --watch' is triggered. However, the browser does not refresh, even though on the "General" tab in devtools I have checked "Auto-reload CSS upon Sass save".
Should the browser reload? Is there a way to get it to reload?
Ps - I have compass but I can not use that as it does not support mapping, so I am compiling sass through the terminal
Thanks
You probably forgot this step:
In the Sources tab, find your generated CSS file, right click on it and choose Map to network resource, and select the same file name in the shown dropdown:
and then choose the matching file from your workspace:
It could be that the Sass-file is still compiling when Chrome tries to reload the CSS. Setting the 'Auto-reload CSS upon Sass save' Timeout to 5000 ms fixed it for me. When Chrome triggers the reload, it can even prevent Sass from recompiling the CSS.
I solved the problem by installing tincr extention and now when I save locally, the browser refreshes.
If I am trying to edit some CSS in a huge project using the built-in developer tools in Firefox (which is accessed by right click and then selecting Inspect Element), is there a way to make those changes permanent?
Actually there is a big number of style sheets and and I could not locate this one property in them? I just could not find the file which contains this property, so I want to make permanent changes to the CSS from within the browser. Is there a way?
EDIT:-
To set up in Chrome first you have to add your project file to a "Workspace", Go into dev tools Ctrl+Shift+I then click on the settings gear and on the left yoou should see Workspace.
After you have added your Project folder into a workspace close out of options and click on the "Sources" tab (still in dev tools)
Now load up your index.html from your LocalHost like you normally would. In the sources panel you should see the currently loaded page and its resources. Right click on your .css file and click "Map To File System Resource" it will bring up a search box where you can search for the corresponding .css file from your actual project folder (that is now part of a workspace in Chrome). Once you make the link Chrome is smart enough to link up any other CSS and HTML files that are in your Project Folder.
Now you can make changes in the Elements tab in Chrome Dev Tools and they changes will persist. Also in the ELements tab it will show you what css file and what line any given Style is originating from!
The best thing about this is if you use Sass or Less then it will map your Scss files back to the CSS styles being processed in Chrome. (please note if using Sass and Less you have to have CSS source maps turned on)
If you don't want to do this by hand, there is a plugin for FF called Stylish that allows you to define rules-based style tweaks.
EDIT
I mention this only because it allows you to publish a set of style changes that any Firefox client can pick up and install to a specific installation. Since one can't "permanently" change the contents of remote style information, the only solution is to manipulate it on a semi-permanent basis on each user-agent that needs the changes.
You can use the Web Developer Toolbar for this matter. By going to CSS menu and then to 'Edit CSS' where you can edit and save your changes. Il also provides tools for identify which files are relevant and modify them manually. Also you may try Firebug extension where you can do similar things.
Links to both here:
https://addons.mozilla.org/firefox/addon/web-developer/
https://addons.mozilla.org/firefox/addon/firebug/
If you have installed Firebug you could install cssUpdater to simplify the process of saving changes.
https://addons.mozilla.org/firefox/addon/cssupdater/
You can take a look at userContent.css:
http://www-archive.mozilla.org/unix/customizing.html#usercss
How to save CSS changes of Styles panel of Google Chrome Developer Tools?
At tool's website it's mentioned that we can see all change in resource panel
But I'm working locally on a CSS file but changes are not showing in Resource panel for me
By the way Do you know any add-ons , tools to save css changes of Chrome Developer tools?
I know for Firebug there are many https://stackoverflow.com/search?q=firebug+CSS+changes+save
You can save your CSS changes from Chrome Dev Tools itself. Chrome now allows you to add local folders to your Workspace. After allowing Chrome access to the folder and adding the folder to the local workspace, you can map a web resource to a local resource.
Navigate to the Sources panel of the Developer Tools, Right-click in the left panel (where the files are listed) and select Add Folder to Workspace. You can get to a stylesheet in the Sources panel quickly by clicking the stylesheet at the top-right of each CSS rule for a selected element in the Elements panel.
After adding the folder, you'll have to give Chrome access to the folder.
Next, you need to map the network resource to the local resource.
After reloading the page, Chrome now loads the local resources for the mapped files. To make things simpler, Chrome only shows you the local resources (so you don't get confused on as to whether you are editing the local or the network resource). To save your changes, press CTRL + S when editing the file.
p.s.
You may have to open the mapped file(s) and start editing to get Chrome apply the local version (date 201604.12).
DevTools tech writer and developer advocate here.
Starting in Chrome 65, Local Overrides is a new, lightweight way to do this. This is a different feature than Workspaces.
Set up Overrides
Go to Sources panel.
Go to Overrides tab.
Click Select Folder For Overrides.
Select which directory you want to save your changes to.
At the top of your viewport, click Allow to give DevTools read and write access to the directory.
Make your changes. In the GIF below, you can see that the background:rosybrown change persists across page loads.
How overrides work
When you make a change in DevTools, DevTools saves the change to a modified copy of the file on your computer. When you reload the page, DevTools serves the modified file, rather than the network resource.
The difference between overrides and workspaces
Workspaces is designed to let you use DevTools as your IDE. It maps your repository code to the network code, using source maps. The real benefit is if you're minifying your code, or using code that needs to get transpiled, like SCSS, then the changes you make in DevTools (usually) get mapped back into your original source code. Overrides, on the other hand, let you modify and save any file on the web. It's a good solution if you just want to quickly experiment with changes, and save those changes across page loads.
New versions of Chrome have a feature called workspaces which addresses this issue. You can define which paths on your webserver correspond to which paths on your system, then edit and save with just ctrl-s.
See: http://www.html5rocks.com/en/tutorials/developertools/revolutions2013/
I know it is an old post, but I save it this way :
Go to Sources pane.
Click Show Navigator (to show the navigator pane on left).
Click the CSS file you want. (It will open in the editor, with all changes you made)
Right click on editor and Save your changes.
You can also see Local Modifications to see your revisions, very interesting feature.
Also work with scripts.
You're looking in the wrong section of "Resources".
It's not under "Local Storage", it's under "Frames":
The above screenshot shows a diff of the original styles against the new modifications made in the devtools. You can right-click the item in the left pane and save it back to disk.
Tincr Chrome extension is easier to install (no need to run node server) AND also comes with LiveReload like functionality out the box! Talk about bi-directional editing! :)
Tin.cr Website
Chrome Web Store Link
Andy's Blog Article
Now that Chrome 18 was released last week with the required APIs, I published my chrome extension in the Chrome web store. The extension automatically saves changes in CSS or JS in Developer tools into the local disk. Go check it out.
UPDATE 2019: As other answers are bit outdated, I'll add updated one here. In latest version there's no need to map the chrome folder to filesystem.
So, suppose I have a web folder containing HTML,CSS,JS files in desktop which i want to be updated when I make changes in chrome:=
1) You'd need a running local server like node etc, alternatively this vscode extension creates the server for you: live server VSCode extension, install it, run the server.
2) load the html page in chrome from running local server.
3) Open devTools->Sources->Filesystem->Add folder to workspace
4) Add the folder which is used in running local server. No additional mapping is required in latest chrome! Ta-da!
More on it Edit Files With Workspaces
Note that the changes made on the styles tab will NOT reflect on the filesystem files.
Instead you need to go to devtools->source->your_folder and then make your changes there and reload the page to see the effect.
As long as you haven't been sticking the CSS in element.style:
Go to a style you have added. There should be a link saying inspector-stylesheet:
Click on that, and it will open up all the CSS that you have added in the sources panel
Copy and paste it - yay!
If you have been using element.style:
You can just right-click on your HTML element, click Edit as HTML and then copy and paste the HTML with the inline styles.
FYI, If you're using inline styles or modifying the DOM directly (for instance adding an element), workspaces don't solve this problem. That's because the DOM is living in memory and there's not an actual file associated with the active state of the DOM.
For that, I like to take a "before" and "after" snapshot of the dom from the console:
copy(document.getElementsByTagName('html')[0].outerHTML)
Then I place it in a diff tool to see my changes.
Full article: https://medium.com/#theroccob/get-code-out-of-chrome-devtools-and-into-your-editor-defaf5651b4a
To answer the last part of your question about any extensions that can save changes, there is hotfix
It allows you to save changes from Chrome Dev Tools directly to GitHub. From there you can set up a post-receive hook on GitHub to automatically update your website.