f# - FunScript querySelector null result -


i want use document.queryselector method html node. in js can receive null result. in f# result type element , it's neither nullable nor optional , it's not clear how check null. how can handle situation when queryselector doesn't match dom node?

yes, it's true f# code assumes element not nullable. can trick compiler think otherwise in several ways. easiest 1 box value this:

let el = globals.document.queryselector(".myclass") if (box el) = null dosomething() else dosomethingelse()`

box ignored when generating js code, there's no performance penalty in doing this.


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