Typescript declaring null

interface Employee1 {
    name: string;
    salary: number;
}

var a: Employee1 = { name: 'Bob', salary: 40000 }; // OK
var b: Employee1 = { name: 'Bob' }; // Not OK, you must have 'salary'
var c: Employee1 = { name: 'Bob', salary: undefined }; // OK
var d: Employee1 = { name: null, salary: undefined }; // OK

// OK
class SomeEmployeeA implements Employee1 {
    public name = 'Bob';
    public salary = 40000;
}

// Not OK: Must have 'salary'
class SomeEmployeeB implements Employee1 {
    public name: string;
}

-1

Source: stackoverflow.com

Similar codes

2 votes128 views3 answers
Getserversideprops
TypeScript
1 vote149 views1 answer
Angular hide element from component when on certain page
TypeScript
0 vote142 views1 answer
React hooks typescript function return and receive
TypeScript
1 vote144 views1 answer
Serenity conditional formatting grid row
TypeScript
0 vote132 views1 answer
Python convert a csv to a tsv
TypeScript
0 vote144 views2 answers
Spritesheets in pyqt
TypeScript
1 vote152 views2 answers
Hthe cmd to create tsconfig.json
TypeScript
0 vote153 views1 answer
What types of Collections/Data structures you have used
TypeScript
1 vote144 views2 answers
No type arguments expected for interface Callback
TypeScript
0 vote174 views1 answer
Wordpress get post attachments url
TypeScript