Svelte3 bind:checked and radio input

[dmitry-kurmanov]

Hello!

I've got the compile time error with the checked binding:

(svelte plugin) ValidationError: 'checked' binding can only be used with <input type="checkbox">

But what about type="radio" ? checked is valid attribute for it, please check: https://developer.mozilla.org/ru/docs/Web/HTML/Element/Input/radio

It make sense when we have several radio inputs with the same name.

Thanks!

PS svelte3 is awesome :)

[dmitry-kurmanov]

According to the source code it seems to be ok :

svelte/src/compile/nodes/Element.ts

Line 512 in 21d56c9

if (type !== 'checkbox' && type !== 'radio') {

I use "3.0.0-beta.20" version

[Conduitry]

With radio button inputs, you can use bind:group - https://v3.svelte.technology/tutorial/group-inputs

The line you're pointing to is actually the test for group bindings. Its error message refers to checked though, and that should be fixed.

bind:checked on radio buttons is something that's come up before (e.g, #1104) and the decision then was that this was too complicated to be worth implementing. bind:group should be able to give you just about everything you need.

[dmitry-kurmanov]

I think that with the new error message we will not have any problem with it. Thanks.