Intro to JSON for Node-RED

Learn the basics of JSON for the IoT. This video shows the structure and real-world use of JavaScript Object Notation or "JSON". Everything you need to know is covered: the different types of values that can be used, the required syntax, and how to reference specific properties. To bring it into the real world, Node-RED is used to show how easy it is to use JSON with live data from an API.
00:00 Introduction
01:21 Generic example
02:15 String value
02:52 Additional number properties
03:26 Boolean properties
03:59 The "no value" null keyword
04:46 Storing multiple values in ordered lists
05:35 Objects as values
06:19 Referring to sub-properties
06:51 Real-world weather data
07:38 Viewing JSON in "PrettyPrint"
08:15 Viewing JSON in the Node-RED debug pane
09:37 Grabbing a specific value
10:33 Getting the path to a sub-property
11:16 Getting data from arrays
12:14 Conclusion
Learn More:
www.opto22.com/
nodered.org/docs/user-guide/m...
www.json.org/json-en.html
discourse.nodered.org/
forums.opto22.com/
More FREE online training
training.opto22.com/
OpenWeatherMap tutorials:
• Quickly Get OpenWeathe...
• How to use APIs with N...
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#api #nodered #node #groov #JSON #IoT #Tutorial #learnprogramming #programming #IIoT #automation #javascript

[@erikderuiter7475]

Wow, you have many gifts, one being able to teach in a way that is so understandable and make things clear which other people could not do... THANK YOU!

[@Opto22]

Great tutorial on JSON!!

[@kristian4805]

Thanks, I have needed this for a long time. So much time spent guessing how I get get a specific value, etc.

[@Opto22]

Great to hear!

[@MyImperfectEcoJourney]

Great video, really easy to understand and follow with the Open Weather API - got me started on my Node Red Journey, thank you. 😀

[@BrianJurkowski]

THANK YOU for this! JSON always seemed so elusive and odd to me. Now that I understand it (thanks to your video!) It's actually quite simple!
I also appreciate the high quality of video production and great audio. That comibined with the useful content lead me to subscribing immediately. I hope to see more videos from you soon.
Cheers!

[@Opto22]

You're very welcome!

[@renegamero]

Fantastic video!! Bravo.

[@Opto22]

Thanks Rene!

[@romanykemp9042]

Absolutely fantastic presentation you created here! Thank You!

[@Opto22]

thanks

[@andymok7945]

Thanks. Very well explained. I understood bits and pieces before, but now more.

[@Opto22]

Glad it was helpful!

[@LeTomasAHUMADA]

Excellent! I was trying to analyse the data from the OpenWeather using a Modicon M262. This video has helped me to understand the syntax and access to the right data. Thanks !!!😎👍

[@Opto22]

Glad it helped!

[@joeking5211]

Very well done, very helpful & clear

[@Opto22]

Thank you!

[@ronsflightsimlab9512]

THANK YOU!!!! I needed this.

[@edwaaij4752]

Thank you . Clear and clear explanation.

[@Opto22]

Glad you liked it

[@higiniofuentes2551]

Thank you for this very useful video!

[@Opto22]

You're very welcome!

[@alexanderkirchnerat]

A perfect video! Thank you so much!

[@Opto22]

Glad it was helpful!

[@michaeljeffery7466]

Fantastic guide/outline. I watched from start to finish, when; if you have some time make a follow-up for more indepth/advanced JSON tutorials.

[@Opto22]

Thanks, will do!

[@riseiot]

Very good explanatory video. Thanks for the efforts

[@Opto22]

So nice of you

[@noweare1]

Nice video, helped a lot, thanks.

[@Opto22]

Glad to hear it!

[@TimCaesens]

Thx for the clear explanation!

[@Opto22]

No worries!

[@manosmorfiadakis1679]

Pretty Helpful

[@Opto22]

Glad it helped

[@lalimorini6087]

Thanks!!! Please, more js functions in node-red 🙏🏼🙏🏻

[@noweare1]

I second the motion.

[@Opto22]

We'll make a note! Thanks for watching!!

[@billgourlay5249]

Nice !

[@Opto22]

Thanks so much!!!

[@d3rsch0rsch]

Awesome video (and the whole series) Thanks for that!
One question: I find filtering out specific values from a message an elegant solution. Like you did in the debug node. However, how can i do the same within the flow, not just for the debug output? Is there an easy way?
Thanks in advance!

[@TomParish]

May I ask, do you know if you can get NodeRed to respond to a JSONP (or JSON-P)? I can't seem to get it to return a payload from that particular device. I know for a fact the device (which is old) is a JSONP interface. Any tips or workaround would be appreciated. And ... man you nailed this tutorial. I've been looking for a simple straight forward video of this nature. I'm pass it along to others.

[@Opto22]

Thanks for watching! It's great to hear that the video was helpful. What device are you using that uses JSONP? And are you using HTTP to send/receive the data, or something else?

[@manologitech]

Great

[@Opto22]

thanks for your support!

[@higiniofuentes2551]

You began with very useful info, but I would prefer to have a sample with the original object you created in the beginning!

[@Opto22]

Noted!

[@iratigaritano3174]

In node-red the information about fft node is very poor. Could you make a video explaining it use? Thank you

[@sarangautointegra]

Hi, friend,
Very goods video..
But how do you have tutorial for format number, take from mqtt
Example in your sample
"count": 22,
May be 22 to changing number from MQTT..?
Thanks friend

[@carlosflorido6682]

👏👏👏👏👏

[@Opto22]

Thank you so much!!

[@sebastiantoulier5956]

PC to an external monitor and I'm watcNice tutorialng tNice tutorials video on one screen and working through exactly what Michael is doing and it is a big

[@erendogan7317]

guys you need to click 3 dots at right side of "debug" to start debugging I wasted 15 mins to understand why I dont see incoming values :(

[@hoegge]

It is not a "parsed JSON object" it is "Parse JSON to JS Object". The current term is confusing and leads people to think it is a "JSON object", which is not the case. JSON is a string.

[@Opto22]

Thanks for clarifying, and thanks for watching!