How do I test someone else's code from Github? - github

I'm on my very second project on Javascript and I came across several people's codes on Github. I'd like to give them a test run to understand how they work. How or what is the best way to go about testing the code?

When you open a repository in GitHub, there's a Green "Code" dropdown menu in the repository page (see screen shout).
You can use this menu to clone\download the repo to your local computer and play with it

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I'm new to github and I can't get my repositories on github pages

I'm new, reaaaally new to github, not familiar at all, just created an account (by watching one old youtube tutorial). And this is my first time here too. Also, english isn't my first language, so I'm sorry for any mistakes.
I'm using the desktop GitHub, I'm not using Git right now (but also the tutorial guy wasn't and it worked easily) and pushing my local repositories to my online github, and it worked. There are four repos and all of them are public. Yet, when I go to my username.github.io there is nothing, it doesn't exist, that's one thing to fix.
Do I have to create some file? I don't understand, there are youtube videos that say you have to choose a theme, but it's been updated I guess because the website it's not like that anymore, and it doesn't show me themes or anything like that.
I've seen a lot of youtube videos and done exactly what they have done, i've read the github guidelines but i think they are confusing, but i tried a lot of different things. If it makes any difference, my repositories only have like .html and css files (plus the images, fonts, html and css stuff). I don't know anything other than hmtl and css yet, not even javascript, so that's it.
So I don't know how to proceed, I've extinguished my completly amateur resources by doind this post, and I'm learning by myself so I have no one to help me here. Also, since I've never had any contact with github, im just "github dumb", I don't know how branchs work, I'm sorry, I know what a branch is, but somehow that plataform makes it hard.
Anyway, I want to know why my username.github.io doesn't work...
Any help, please? :')
First, create a github repository of <username>.github.io and put your html/css files there. Then go to the repository settings and find the "pages" settings at the left.
In the source, select "deploy from branch" and select your main branch and select the root directory and click save.
That's it, your repository will be published to github pages and you can see the url at the top of the page.
I have attached a screenshot if it is difficult to follow.
The same information can be found here.

Is there a way to add custom "badges" to files on GitHub?

I have it in my head to help people at my company get better by finding a way to highlight and call out good code.
In particular, I'd like to be able to mark a file (not a repository or directory) as having a "gold star" (or another badge) so people browsing our source code who see the badge can see they're looking at a really good implementation they might take inspiration from.
I'm taking inspiration from the code owners feature on GitHub where there's a little padlock icon on a file if it's assigned ownership by the CODEOWNERS file.
Is it possible to do a custom "badge" on GitHub? If so, what's the API?
Browsing the GitHub documentation and searching online, I wasn't able to find anything explaining how to do something like this. Most folks were talking about the little images badges like the code coverage badges people put in their readme files.
Checkout this thread. You can submit feature request to GitLab and GitHub or in case of GitLab code your own feature and submit PR.
Here are some closely related discussions. Probably you have already seen them and are not looking for them but you might use them to get idea of how to create the feature that you want.
The Shields service (at shields.io) provides a way to create custom badges for your projects. These are badges are very common and are frequently used to show status information about the project, or demonstrate tools that were used for the development of your project. (...more)
Also checkout Bring Your Own Badge

Is it possible to close a GitHub/GitLab repository?

I haven't found anything about closing a GitHub/GitLab repository. I guess it's not feasible.
By "closed", I mean: it's possible to browse it/clone it, but not to create new commits/branches.
Maybe there is some kind of equivalent or other way to achieve this on either GitLab or GitHub for this? Bonus point if there is a readable error or message somewhere stating that the repo is closed.
On GitHub, you can "archive" a repository, making it read-only, which seems exactly what you're looking for. You can find a button to do so right in the settings of your repo, that is https://github.com/<username>/<repository>/settings. A banner will be shown stating that the repository is archived and no further modifications (e.g. new commits or branches) are possible. See this help page for more info.
On GitLab, the same thing can be done from Settings > General > Advanced settings > Archive project. See this help page.

Check-in using GitHub

I am checking out code using GitHub client for Windows. When I press "clone" button in browser, it looks like I have a local copy. However, there are a few files that GitHub is asking me to commit. Now, I have not even made any changes to anything on my local. So why is it asking me to "commit"?
Can anyone tell me why I am facing this problem. Also, are there any good GitHub tutorials to follow?
Thanks in advance,
There is a great github tutorial here, that should get you started with the basics: http://rogerdudler.github.io/git-guide/.

Disable Source tab in Google Code

How to disable source tab in Google Code? I don't want any random users to look at my code.
Before you say that this can't be done, that Google Code is by default open source. Someone managed to do it, somehow.
Edit: Before you downvote me further, take a look at the link I provided. It's possible to do it, despite whatever you want to say. And I want to know how.
I don't want any random users to look at my code.
You can't prevent people from downloading the source code. Google's SVN repositories are open to anonymous browsing and checkout. For example, in the project you cited (the StackOverflow clone), notice that
svn checkout http://cnprog.googlecode.com/svn/trunk/ cnprog-read-only
works just fine for downloading the source.
If you don't want people looking at your source code, don't use a free public-hosting service. Setting up a local svn repository is very easy, in any case: here's how you'd go about setting one up and adding stuff to it.
In your GC page Administer|Tabs then check the hide checkbox next to Source. Your code will still be available via SVN though.
The whole point of Google Code is that it is for open source. That means everyone is allowed to see it. If you don't want people looking at your code, use some closed source hosting site.
You can replace tabs with Wiki pages (for example, to point to your GitHub repository), but you can't prevent access to the Google SVN server.