Simplified Method for Verifying Null and Undefined in Typescript

Hey there, I'm currently working on an Angular 11 project and I'm facing a challenge when it comes to checking for null and undefined values.

In my scenario, I have three strings - equipmentId, roomId, and personnelId, as well as a boolean flag called adresseeChosen.

The objective is to set the adresseeChosen flag to true if any of the mentioned strings are not null or undefined. Here's the current implementation:

this.adresseeChosen = (this.equipmentId != null && this.equipmentId !== undefined)  
                      || (this.roomId != null && this.roomId !== undefined) 
                      || (this.personnelId != null && this.personnelId !== undefined)

Is there a shorter or more concise way to achieve the same result? Appreciate your insights!

angulartypescript

Answer №1

If you need a quick way to determine if a value is either null or undefined, consider creating a utility function like the following:

function checkIfNullUndefined(value): boolean {
  return (value === null) || (value === undefined);
}

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