Intro to JSON for Node-RED
49.8 هزار بار بازدید -
2 سال پیش
-
Learn the basics of JSON
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:
https://www.opto22.com/
https://nodered.org/docs/user-guide/m...
https://www.json.org/json-en.html
https://discourse.nodered.org/
https://forums.opto22.com/
More FREE online training
https://training.opto22.com/
OpenWeatherMap tutorials:
Quickly Get OpenWeatherMap API Data w...
How to use APIs with Node-RED: OpenWe...
All Opto 22 products are designed, manufactured, and supported in the U.S.A. from our Temecula, California headquarters and factory.
#api #nodered #node #groov #JSON #IoT #Tutorial #learnprogramming #programming #IIoT #automation #javascript
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:
https://www.opto22.com/
https://nodered.org/docs/user-guide/m...
https://www.json.org/json-en.html
https://discourse.nodered.org/
https://forums.opto22.com/
More FREE online training
https://training.opto22.com/
OpenWeatherMap tutorials:
Quickly Get OpenWeatherMap API Data w...
How to use APIs with Node-RED: OpenWe...
All Opto 22 products are designed, manufactured, and supported in the U.S.A. from our Temecula, California headquarters and factory.
#api #nodered #node #groov #JSON #IoT #Tutorial #learnprogramming #programming #IIoT #automation #javascript
2 سال پیش
در تاریخ 1400/12/25 منتشر شده
است.
49,809
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