Reactivity is at the heart of many web interfaces. It makes programming robust and interactive web apps much, much easier. Although most frameworks...
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REPL isn't working but other than that this is well written and clear!
Most people haven't heard of getters and setters in JS.
Your next one should be on proxy as an alternative way to do the same / similar.
Great article! ❤🦄
Yeah, the REPL has a lot of problems. I actually opened two issues on it the last day.
Proxy is not that supported, so I chose getters/setters.
What do you mean proxy not supported? Proxy is much supported. In fact, vue 3 reactivity is base on Proxy.
It's not supported everywhere
Yes, for sure. Only if you support some esoteric platforms keep writing getters and setters.
But you are using arrow functions so the difference will be next to nothing!
REPL seems to work now!
TBF arrow functions can be provided by babel, proxy cannot be polyfilled. I don't use them either because of the need for IE11 support.
This is really well written! Thank you for the explanation!!
Just checking:
Should this have been
this.name = valtaking the value from the setter param?Welcome 😁
I got bogged down at the very beginning at
const who =, especially when I read "Later, you changewho"... I was under the impression that JS constants cannot be changed, and it also didn't work for me when I tried, but I may be missing something basic.That's my bad, constants can't be changed. I'll fix it. Thanks!
Nice article. The Modstache library I wrote uses this approach for reactivity. It uses Object.defineProperty to modify object property getter and setter functions to automatically modify the DOM when the property is modified. It also uses a Proxy for array manipulations. It's an efficient way to detect changes to an object and perform an action, log activity, etc.
noice
Cool! Look similar to Observer pattern
It's beautiful. I had never thought of reactivity in this way. Thanks.
I think that codes needs some improvement for wroking with primitive values