[embedyt] https://www.youtube.com/watch?v=hN55CQLza04[/embedyt]
In this tutorial, i am going to tell you how to install Node js in Mac OS. But before that let us understand what Node js is and why should we use it?
It's simple to run app.js with Node.js. From a terminal, just type: node app.js. You should see 'Hello World' output to the terminal and then Node.js returns. Integrated Terminal. VS Code has an integrated terminal which you can use to run shell commands. You can run Node.js directly from there and avoid switching out of VS Code while running.
Node js is a javascript run time environment, and it is built on Chrome’s v8 engine. It executes a javascript programme in the browser. Node js has provided superpowers to javascript as other programming languages have.
Why should we use Node JS?
Every programming language has its own benefits, when we talk about Node js, it was developed considering better performance and scalability for software applications. It’s a power-packed tool which is used for large and complex web and mobile applications.
Here are the few reasons to use Node JS.![]()
How to Install Node js in Mac OS?
Head over to node js official website and download the node js installer. You’ll see a few versions, but I would suggest downloading the recommended version.
Once your installer is downloaded, then click on it and let the install wizard do its work. It’ll install both Node and NPM (node package manager), NPM allows us to install other packages in the node_modules folder.
Then accept the agreement and install the node js in your mac os. Limited free mac apps.
Finally it will ask you to make sure /usr/local/bin is in your
$PATH . Run the command to check the path.
Use the below method to check whether Node js working correctly or not by using below commands.
Press
‘control’ + ‘c’ twice to come out from the node terminal.
Run the following command to check the node version.
TABLE OF CONTENTS
V8 is the name of the JavaScript engine that powers Google Chrome. It's the thing that takes our JavaScript and executes it while browsing with Chrome.
Keygen app mac 2019. V8 provides the runtime environment in which JavaScript executes. The DOM, and the other Web Platform APIs are provided by the browser.
The cool thing is that the JavaScript engine is independent of the browser in which it's hosted. This key feature enabled the rise of Node.js. V8 was chosen to be the engine that powered Node.js back in 2009, and as the popularity of Node.js exploded, V8 became the engine that now powers an incredible amount of server-side code written in JavaScript.
The Node.js ecosystem is huge and thanks to it V8 also powers desktop apps, with projects like Electron.
Other JS enginesRun Node Js App Mac Os
Other browsers have their own JavaScript engine:
and many others exist as well.
All those engines implement the ECMA ES-262 standard, also called ECMAScript, the standard used by JavaScript.
![]() The quest for performanceHow To Start Node Js
V8 is written in C++, and it's continuously improved. It is portable and runs on Mac, Windows, Linux and several other systems.
In this V8 introduction, we will ignore the implementation details of V8: they can be found on more authoritative sites (e.g. the V8 official site), and they change over time, often radically.
No procrastination app mac. V8 is always evolving, just like the other JavaScript engines around, to speed up the Web and the Node.js ecosystem.
Torque app for mac. On the web, there is a race for performance that's been going on for years, and we (as users and developers) benefit a lot from this competition because we get faster and more optimized machines year after year.
Compilation
JavaScript is generally considered an interpreted language, but modern JavaScript engines no longer just interpret JavaScript, they compile it.
This has been happening since 2009, when the SpiderMonkey JavaScript compiler was added to Firefox 3.5, and everyone followed this idea.
JavaScript is internally compiled by V8 with just-in-time (JIT) compilation to speed up the execution.
This might seem counter-intuitive, but since the introduction of Google Maps in 2004, JavaScript has evolved from a language that was generally executing a few dozens of lines of code to complete applications with thousands to hundreds of thousands of lines running in the browser.
Our applications now can run for hours inside a browser, rather than being just a few form validation rules or simple scripts.
In this new world, compiling JavaScript makes perfect sense because while it might take a little bit more to have the JavaScript ready, once done it's going to be much more performant than purely interpreted code.
Create Node Js AppContributorsComments are closed.
|
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |