how do you do this: ```delete obj['property']```

# javascript

[Bernhard]

how do you do this:

delete obj['property']

[Robert Jaros]

external fun delete(p: dynamic)

[Artem Kobzar]

Only with the embedded js syntax:

js("delete obj['property']")

Could you please describe your use-case? It's possible that your use-case could be solved in a different way, or it's so essential that we should give an access to our internal function called jsDeleteProperty

[Bernhard]

use case is mutating a js object in a callback from an external API; the first place that I've checked was the MutableRecord interface and I think inlining JS should work fine there

[Bernhard]

hm, is this not supported when inlining js

fun Any.deleteProperty(property: String) = js("delete this[property]")

does not work, this works:

fun deleteProperty(obj: Any, property: String) = js("delete obj[property]")

[Artem Kobzar]

Yep, it's because it's trying to translate this as the JavaScript this. It's a problem we know about

[Edoardo Luppi]

Btw @Bernhard, kotlin-wrappers js module already provide this function if you're importing it for other needs.

[Bernhard]

thank you, I will take a look 🙂

[turansky]

There is no needs in custom external delete

[turansky]

It already exists in Reflect

[turansky]

Here

[Bernhard]

thank you Victor!