It is plain English (replace English with your native language) instructions for solving the problem. When you understand the requirements of the program, then you can write the steps to solve it. What data do you need? What is the outcome? What tests does your program need to pass?
Designing a Programīefore you write any code, you should take the time to understand the problem. If all is well, you will see the text "Hello, World" output to the terminal.įrom now on, you can test the code examples from this tutorial either by using the Node REPL or by saving to a file. Next, let's print the message “Hello, World”. To try it out-enter the command node in your terminal. Basically, the shell will Read the code you enter, Evaluate what you wrote, Print the result, and keep Looping until you exit. The term REPL stands for Read-Eval-Print-Loop. This takes place in what is called an REPL shell.
One of the things you can do with Node is run JavaScript code from within your terminal. If everything is fine, you will see the version number of your Node installation. Confirm that the installation worked by typing the command node -v from your terminal. You can get the software on the Node.js website. Next, download and install Node to your computer. I recommend Sublime Text or Visual Studio Code. You will be able to put it on your resume and impress your employer later.įirst, you will need a text editor to write your code in. This should give you something like the image below, where I have already executed a line of code.Īlternatively, you can also consider using Node if you are comfortable with installing and setting up your own runtime environment.
All you need to do is press Control-Shift-K in Firefox or Control-Shift-J in Chrome to get started. This is especially true if you have no prior experience with programming in general. The easiest way to do so would be to use your web browser. Alternatively, you can test code examples in an online editor like OneCompiler. First, we will set up our development environment so that we can run our code on our own computer.
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