Why pass this again to the custom form validator?

Question

Angular

Please help me figure it out.
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I have a form with two fields. A custom validator hangs on one of the fields. In the list of validators, I write it like this:
this.customValidator()
However, the built-in linter says that you need to pass an argument. But the validator function doesn't accept this, so I don't understand why we need to pass it. This is not clear
. If I write the validator call like this.customValidator() , then it is executed in the context of this. Because this comes before the dot. Therefore, I see no point in writing With which, by the way, there is no syntax error. This is also incomprehensible
this.floorValidator.bind(this)

Answer 1

You don't have to transfer anything. And you don’t need to call the validator when passing it to the FormControl constructor (do you really still not understand the difference between a function and calling it?).
What you forgot is to return some result from the validator. For example .