Angular Signals: What? Why? and How?
56,049
Published 2023-04-03
So, what are signals? Why would you want to use a signal? How do you create, read and change a signal? And how do you define a computed signal? Watch this video for details and a demo of these cool new features!
Links
My completed Stackblitz: stackblitz.com/edit/angular-signals-deborahk
Content
00:00 Introduction to Angular Signals
00:51 Why use signals?
03:58 What are signals?
06:16 How to create signals?
06:34 Where to use signals?
06:54 Creating a signal
09:10 Reading a signal
09:14 Setting a signal
11:18 Signal methods: set, update, mutate (NOTE: mutate is no longer an option, use update)
12:06 Defining a computed signal
13:14 Using an effect for side effects
14:36 Signals and templates
15:15 Current state of signals
15:36 Suggestions for how to use signals
16:00 Demo
NOTES
* There is a typo on the slide at time code 2:12. The exPrice = price * quantity calculation should be exPrice = this.price * qty.
* As of Angular v17, .mutate is no longer an option. Use .update instead.
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😊About Me
Hey! I'm Deborah Kurata
I'm a software developer and YouTube content creator. I speak at conferences such as VS Live and ng-conf. I write articles for freeCodeCamp. And I'm a Pluralsight author with courses in the top 10 most popular (out of 10,000+) over the past 5 years. For my work in support of software developers, I've been recognized with the Microsoft Most Valuable Professional (MVP) award, and I'm a Google Developer Expert (GDE).
Contact me on Twitter: twitter.com/DeborahKurata
Find my Pluralsight courses: www.pluralsight.com/profile/author/deborah-kurata
Access my freeCodeCamp articles: www.freecodecamp.org/news/author/deborah-kurata/
View my YouTube content: youtube.com/@deborah_kurata
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All Comments (21)
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Deborah, we are so blessed to have you in the Angular community!!!
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I absolutely love your way of teaching. I can only guess how much effort you have to put in to make it this tasty for the rest of us. Bow of respect. Kind Regards.
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It's unbelievable the time and effort you put in your tutorials, Deborah. We appreciate you - always!
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This is pure gold, Deborah. Congrats!
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Oh my goodness! Aren't you the best Angular tutor on youtube?! Honestly, you clearly standout. Please continue with your teaching style. Thank you Deborah
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Thank you Deborah for updating. Your videos are very easy to understand and useful.
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Great stuff, @Deborah! Thanks for the update!
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What a brilliant way to explain this! I love how you explain each concept wich such a good examples! Thank youuu, now it's very clear to me this exciting mew feature!
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you are a great great teacher deborah 👍 you always break things down in a way that makes it easy to get the bigger picture so just wanted to say thank you for your work 😁
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Wow, This video is absolutely awesome! The content is explained so clearly and straightforwardly. Thank you!
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Best Signal tutorial i have seen so far! Weldone!
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This the best signals tutorial I have ever seen Thank you Debora
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Thank you Deborah, you are so talented at explaining concepts. Would love to see videos related to standalone APIs and non-destructive hydration as well.
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❤So good to find these tutorials on YouTube!
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The best signals explanation that a find, always clear. Thank you
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Fantastic explanation 🙌🏻. Thanks a lot Deborah
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Thanks a lot Deborah for this amazing video. Perfectly explained.
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Thank you very much, Deborah. Your videos are very helpful, even for people who don't speak English very well. Everything is very well explained, step by step.
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best explanation of signals so far... thank-you miss @Deborah Kurata for sharing with us..
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Terrific explanation!! thanks, i can't wait to see more content, Greetings from Colombia!
