what is GitHub?

Git Hub:

Repository

A GitHub repository can be used to store a development project.

It can contain folders and any type of files (HTML, CSS, JavaScript, Documents, Data, Images).

A GitHub repository should also include a licence file and a README file about the project.

A GitHub repository can also be used to store ideas, or any resources that you want to share.

Branch

A GitHub branch is used to work with different versions of a repository at the same time.

By default a repository has a master branch (a production branch).

Any other branch is a copy of the master branch (as it was at a point in time).

New Branches are for bug fixes and feature work separate from the master branch. When changes are ready, they can be merged into the master branch. If you make changes to the master branch while working on a new branch, these updates can be pulled in.

Commits

At GitHub, changes are called commits.

Each commit (change) has a description explaining why a change was made.

Pull Requests

Pull Requests are the heart of GitHub collaboration.

With a pull request you are proposing that your changes should be merged (pulled in) with the master.

Pull requests show content differences, changes, additions, and subtractions in colors (green and red).

As soon as you have a commit, you can open a pull request and start a discussion, even before the code is finished.

Comments

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AJAX

What is AJAX? AJAX stands for Asynchronous JavaScript and XML. AJAX is a new technique for creating better, faster, and more interactive web applications with the help of XML, HTML, CSS, and Java Script. Ajax uses XHTML for content, CSS for presentation, along with Document Object Model and JavaScript for dynamic content display. Conventional web applications transmit information to and from the sever using synchronous requests. It means you fill out a form, hit submit, and get directed to a new page with new information from the server. With AJAX, when you hit submit, JavaScript will make a request to the server, interpret the results, and update the current screen. In the purest sense, the user would never know that anything was even transmitted to the server. XML is commonly used as the format for receiving server data, although any format, including plain text, can be used. AJAX is a web browser technolo...

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