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

0 vote126 views1 answer
Simulate click typescript
TypeScript
0 vote132 views2 answers
Does word start with vowel typescript
TypeScript
3 votes137 views6 answers
Get multiple inputs in python
TypeScript
1 vote130 views1 answer
Tostring kotlin
TypeScript
35 votes143 views4 answers
Because running scripts is disabled on this system. For more information, see about_Execution_Policies at https:/go.microsoft.com/fwlink/?LinkID=135170.
TypeScript
0 vote128 views1 answer
Get all the ids in an array of objects ts
TypeScript
1 vote119 views1 answer
Div contenteditable maxlength reactjs
TypeScript
0 vote128 views1 answer
The softness of a spot lights edge is controlled by penumbra angle, value gives perfect hard edge:
TypeScript
2 votes137 views2 answers
For (... in ...) statements must be filtered with an if statement (forin)
TypeScript
0 vote141 views1 answer
The migration '20200806160941_InitialMigration' has already been applied to the database. Revert it and try again. If the migration has been applied to other databases, consider reverting its changes using a new migration.
TypeScript