Published in Nerd For Tech·17 hours agoCORS ExplainedYou can read more about HTTP here. CORS — Cross Origin Resource Sharing. Let’s understand the difference between Origin and Site. Let’s take an URL: http://app.paperless.com/about Here http:// → Scheme(protocol used) app → Sub-domain paperless -> second-level domain com → Top-level domain about → sub-directory Take a long URL like…Cors2 min read
Published in Nerd For Tech·Sep 16Understanding Async, Event loop, Task queue in JSWe know Javascript is single-threaded and synchronous. Read more about this here. Single-Threaded = Process one line at a time. Synchronous = Sequence = one after other. Let’s give Rashomon’s effect on synchronicity. If it processes one after the other, the second line waits for the first line and the…Call Stack5 min read
Published in Nerd For Tech·Sep 4Understanding Execution-context, Hoisting, Call-stack, Closures, Scope, Block in JavaScriptNote: I have imported it from my blog. So it may not look like the original post. If you want to read the original blog. Please visit here. Is JavaScript synchronous? Yes. Is JavaScript single-threaded? Yes. Enough of jargon like thread and synchronous. Let’s understand these terms first. Synchronous =…Java Script8 min read
Published in Nerd For Tech·Aug 15HTTP Caches and CookiesCookies: — HTTP is a stateless protocol. It means it treats each request independently without any knowledge of previous requests. There is no link between two requests being successively carried out on the same connection This concept of statelessness becomes problematic when you are on an e-commerce site. This is because once…Http Cache3 min read
Published in Nerd For Tech·Aug 14Decoding HTTP Headers(Basic)HTTP header = Meta-data = data about HTTP data being send or received. We know HTTP is based on a client-server model. The client can be from any part of the world, and the server can be from any part of the world. The client can use any browser like…Http Headers4 min read
Published in Nerd For Tech·Aug 13Making sense of HTTP — IVWe will see the structure of HTTP messages. Messages can be requests and responses. Messages are texts. Usually, web developers won’t craft these messages, and web browsers do it. The first line in the message is called ‘Start line’ and is always a single line. Then set of HTTP headers…Http Request2 min read
Published in Nerd For Tech·Aug 13Making sense of HTTP — IIIIn the last article, we concluded that HTTP is the foundation protocol(Set of rules) for sending and receiving messages on the web. It gives you a prescribed format for client requests and server responses. These requests/responses sit over TCP that ensures correct data is received. Evolution of HTTP: Why do we need hypertext? Think of hypertext as a…Http Client3 min read
Published in Nerd For Tech·Aug 12Making sense of HTTP — IIWe know the Internet is a broader term, and the Web is one of its applications. Simply Internet is a connection of multiple devices. We can do whatever we want with this connection, including a computer virus, hacking, etc. One of the most widely known applications is the Web. This…Http Request3 min read
Published in Nerd For Tech·Aug 12Making sense of HTTP — ISay you search for something on Google. Just sit back and think about what happens here. You searched for something. Okay! From where? Maybe in your office or home. But do we need a physical device to search? Maybe a laptop or mobile. Before searching in Google, you need to…Http Client4 min read
Published in Nerd For Tech·Jun 24React Router DOM v6 — Part — IReact enables us to develop single-page applications i.e single HTML pages. Essentially we render different components in a single HTML file. This is done by connecting different .js file(React component) to a particular <div> file in HTML file. Why React Router? How do we implement different components based on URL? abc.com/login and abc.com/home…React Router3 min read
