Among the primitive data type, you may have already heard about Symbol. But you're asking yourself what is it? When is it useful? When are they cur...
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Great explanation! Another use case for
Symbolsis safely extending prototypes (Array, String, Number, etc.) - I built a library (Metho) that helps to do this kind of thing easily. Check it out if you want to see another waySymbolscan be usedOh thank you for the additional information. I check your library asap :)
In the "same value in iframe" section both return false, what am I doing wrong?
Hello. Do you have some code to share ?
I have made a codesandbox where you can see the behavior: codesandbox.io/s/iframe-example-fo...
Hi, it worked, thanks, I just needed to use load to wait for the iframe to load.
iframe.addEventListener('load', () => {
// do something
});
one question.
why did you write the last example as
class Computer {
constructor() {
this[Symbol.toStringTag] = "Computer";
}
}
and not like
class Computer {
[Symbol.toStringTag] = "Computer";
}
I write like this because if I'm not mistaken the
public class fieldwill be available in ES2022.Or we currently can use it thanks to babel plugin
@babel/plugin-proposal-class-propertiesGreat article! Really enjoyed the iterator and class toString methods you presented.
Thank you. Glad you liked it :)
wow. you used some advanced syntax and techniques there. I read about Symbols way back but never used them and neither do people generally know about them as I have seen.
Yep generally people doesn't know about
Symbol, hoping my article will show that it's useful :)