![]() Whenever you're parsing HTML, you should keep in mind that the libraries we use for parsing and traversing the content aren't browsers. Now that we have covered methods to obtain the raw HTML containing the information we need, we still need to cover the process of extracting the actual data we're after. It's ultimately up to you which one you prefer, but considering both libraries are widely used and have active communities surrounding them, you can hardly go wrong with either. As you can see, there is very little difference between the popular HTTP request libraries, both in code and in their performance. To install Axios in our project, we simply run:Īnd the results are very similar. This means that it has full support for asynchronous requests, as opposed to some older methods. ![]() Axios HTTP Īxios is a simple HTTP client that makes use of Promise. The first one we'll look into is called Axios. In our application, we have a handful of options to send an HTTP request. The response body typically contains the requested data.Įvery HTTP request roughly follows the same steps: The server checks to see if the request is valid and, if so, responds with an HTTP response code and a set of headers. ![]() The client sends a request to the server, which may be in the form of a URL or a file name. The basic structure of an HTTP request and response is defined in RFC 2616. HTTP is a protocol designed for transferring data between a web server and a client. However, instead of pointing our browser to a web page and copying the content, we'll have our application send a request on our behalf. This is usually done by requesting content over HTTP. In order to do so, we first need to obtain raw data from a web page. The goal of our scraping operation is to create structured data we can use for analysis. TypeScript is a strong contender for maintainable NodeJS applications, and we always recommend using it over plain JavaScript. TypeScript is supported by many popular front-end frameworks and tools, making it a great choice for developing robust, maintainable code. It also has a more modern type system, which makes it easier to write code that is both robust and expressive. It enables type annotations in your code, which makes it more robust and error-resistant. This resulted in Microsoft introducing TypeScript, which includes a compile-time type system while being completely interchangeable with plain old JavaScript code. With the rise in popularity of JavaScript, a lot of developers felt that while JavaScript does provide incredible productivity and performance, it does lack some of the 'robustness' features by other languages. In plain English, this means it's very fast, and very capable of dealing with high load and/or volumes. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications. Node.js is a platform-agnostic JavaScript runtime that enables developers to build fast, scalable network applications. The most popular server runtime for JavaScript is NodeJS, which uses Google Chrome's v8 runtime. Various server runtimes have made JavaScript, and TypeScript by extension, a popular choice as a language on the server. To drive that point home, as of 2022, over 98% of all web pages use JavaScript in one way or another. Traditionally, JavaScript has been a browser language. These characteristics make it a very popular language in modern web development, and a prime choice for scraping content. JavaScript is easy to learn, and it has a wide variety of libraries and tools that make development easier. ![]() It is a cross-platform language, and it can be used to create websites and web applications on both desktop and mobile platforms. It is a relatively new language, and its popularity is growing rapidly. ![]() It is a versatile language that can be used for a variety of tasks, such as creating menus and buttons, handling form submissions, and creating dynamic content. JavaScript is a programming language that enables you to create interactive websites and web applications. ![]()
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