How to Write to CSV File | JavaScript and Node.js

in today's video I will show you how to write a CSV file using JavaScript and node.js this is what the product result will look like the data that I have highlighted here we rented CSV file after we successfully run the program and so now we just run the program and we can see a message letting us know that CSV file was saved successfully now if I open up the output file we can see that the data that I just showed is now ran successfully to CSV file as you can see here so to start I would just delete all the files I have here and start from scratch so the first thing to do is to download node.js and this is what the page should look like I'll make sure to leave a link in the description as well once you're on this page just make sure to download node.js for your specific operating system once you've successfully installed it go back to your code editor then open up the terminal in this specific example I'll be using visual studio code and using the integrated terminal the First Command we need to run is npm a knit and then do Dash Y and that should automatically just create us a package.json file once that file is created we just need to download a package that will help us easily write to CSV file and here's the package we will be using it's called convert array to CSV just copy the command to install it over here and switch back to our terminal and just paste the command and hit enter once you have that successfully installed just create a new file and you can name it whatever you would like I'm just going to do index.js then we can switch back to the npm package and scroll down and you can pretty much copy all of the code up to this point then switch back to our code editor and just paste the code we can get rid of the code starting from line 10 going all the way down just for now then if we go back to documentation and scroll down a little bit more just copy this section of code and go back to our text editor and just paste it in we can get rid of the code on line two actually since we're not going to use it for this example just to briefly explain what we have so far on line four we have the headers for the CSV file and installing on line five we have all the different rows of data that we're going to save to the CSV file then on line 11 we're just calling the function cover array to CSV to actually convert the data array in a header to a valid CSV format which would be saved in this variable called CSC from array of arrays now for the last step we just need to write all the CSV data to an actual file which we can do by importing the file system module from node.js by just doing const FS equals require ifs then I'm just going to copy the next snippet of code if I'll just explain what this is doing here we're just calling the file system.write file function for the first argument it takes in the file name for the second argument it takes in the data that we're writing the file to and then here we're just doing some error tracking if there is no error then we should see this message saying CSV files safe successfully one small change that we need to make is for the separator we just change this that comma and just make sure to save the file now we can go to our terminal and just type in the command node followed by your file name and my specific example is index.js and I'll hit enter we can see in the output that the CSV follows was saved successfully and now if I go to the output.csv file you can see all the data was successfully written to it and as the end of this tutorial hope you have a better understanding of how to write that CSV file using JavaScript and nodejs if you found this tutorial helpful in any way please like the video and don't forget to subscribe for more content

Channel: Andy's Tech Tutorials

Views: 5,966

Keywords: node.js, javascript, nodejs, how to convert json to csv in node.js, convert json to csv using node.js and javascript, how to write to csv in javascript, nodejs write csv file, nodejs write csv file parsing, nodejs write csv file tutorial, how to upload and read a file with nodejs / express, how to generate random data in node.js, how to create csv and download in node js, how to convert json to csv file in javascript, node.js tutorial, how to convert to csv with javascript

Id: ggdoUEWxQ5U

Length: 3min 5sec (185 seconds)

Published: Sun Jan 08 2023