DEV Community

Cover image for ⏰ Svelte Crash Course (in 10 pics!)

⏰ Svelte Crash Course (in 10 pics!)

Xiaoru Li on October 19, 2019

Originally posted on Twitter as a thread: https://twitter.com/hexrcs/status/1185186492982943744 Huge Update: Video Version Now Availab...
Collapse
 
mauro_codes profile image
Mauro Garcia

OMG! This post was amazing! After finishing the official Svelte tutorial, I can tell that you managed to cover many important topics with very few words!

Thanks! We need to start talking more about Svelte and the message behind the framework

Collapse
 
hexrcs profile image
Xiaoru Li

Thanks a lot for the kind words! Glad you liked it! 😄

More Svelte users, better ecosystem 😄

Collapse
 
rdewolff profile image
Rom

Very nice visuals! That help a lot to grasp the concept you explain very quickly! Great job!

Collapse
 
hexrcs profile image
Xiaoru Li

Thanks! 😁

Collapse
 
dmitrykurmanov profile image
Dmitry Kurmanov

Hello! Thanks for the great article!

If I understand correctly, there is a typo here.

I think that "Setting a prop is just like doing regular HTML." should be "Setting a prop is just like doing regular JS".

Collapse
 
hexrcs profile image
Xiaoru Li

Hi, it's actually not a typo. What I meant was setting props in regular HTML <img alt="Nice image" src="nice-img.jpg"> (image tag with alt and src prop/attribute) is exactly the same in Svelte's template.

Collapse
 
dmitrykurmanov profile image
Dmitry Kurmanov

I've got it.Thanks!

Collapse
 
cameronapak profile image
cameronapak

Thanks for creating this post! Reactive Statements remind me of the useEffect hook in React

Collapse
 
hexrcs profile image
Xiaoru Li

Yes! But if you are using it to set derived states, you don't have to specify the dependencies manually.

Collapse
 
seanmclem profile image
Seanmclem

Could you elaborate on setting props, in example 5? You export dark, so you can set it? But you set color, not dark. It's the one thing I don't understand

Collapse
 
hexrcs profile image
Xiaoru Li • Edited

Thanks for asking, I see I should have made it more clear there.

So we are dealing with 2 components here, a simpler component CoolDiv.svelte (whose code is not shown), and the component we are looking at. Let's say it's called CoolDivWithText.svelte. All the code shown here belongs to CoolDivWithText.svelte.

The dark prop is on CoolDivWithText while color prop is on CoolDiv. CoolDivWithText wraps around CoolDiv; instead of offering arbitrary color options, we limit it to only allow dark theme or bright theme.

(I'm thinking of remaking this example)

Edit: I've updated the image in the article. Here is the original one this comment was talking about.

Collapse
 
seanmclem profile image
Seanmclem

I'm just totally new to Svelte, but I really like this approach to crash-course.

Thread Thread
 
hexrcs profile image
Xiaoru Li • Edited

Glad you liked it! I'm also working on a GraphQL crash course, which I will publish soon.

I updated the 5th pic, by the way. Hopefully, it's less confusing this time.

Sometimes we can become biased and miss the readers' point of view. It's hard to unlearn stuff. 😛 Thanks for pointing it out!

Collapse
 
pavelloz profile image
Paweł Kowalski

Great work! Best presentation of the "get started with svelte" ive found on the internet. Congrats :)

Collapse
 
hexrcs profile image
Xiaoru Li

Awe, thanks so much!

Collapse
 
adityapadwal profile image
Aditya Padwal

Das ist toll!
Nice read.

It would be great to have you join the Svelte JS developers group on LinkedIn.

linkedin.com/groups/10473500

Collapse
 
hexrcs profile image
Xiaoru Li

Thanks, joining the group! (I'm not very active on LinkedIn though 😛)

Collapse
 
yarmaa profile image
Yarmaa

Thanks, this article is exactly what I was looking for :)

Collapse
 
ferhatavdic profile image
FerhatAvdic

Its a hot topic lately but it doesnt bring anything significant to the table.

Collapse
 
hexrcs profile image
Xiaoru Li

Speed, fully reactive state management, much smaller bundle size, write less code to do more? 😉

Collapse
 
ferhatavdic profile image
FerhatAvdic

Yes. Thats what we already have with the popular frameworks.

Aside from that i appreciate you trying it out and letting us know what it can do.

Thread Thread
 
jligeza profile image
Jakub Ligęza • Edited

Svelte has very good performance. If somebody wanted to make a hybrid app, this framework is a strong pick, as hybrid apps with popular frameworks often have visible performance issues.

Collapse
 
dennisfrijlink profile image
Dennis Frijlink

This the tutorials I like. Short, clean and most important, useful!

Collapse
 
bw984 profile image
Brady Walters

Great write up. This should be considered the pre-tutorial. A nice 10,000ft view before diving into the nitty gritty.

Collapse
 
bscott profile image
Brian Scott

This was an awesome post!!, wish I learned everything this way. Perfect crash course!

Collapse
 
oreadweb profile image
oRead

Svelte is very appealing but what about meta data?