All Questions
26
questions
0
votes
0
answers
33
views
Why can't I access a property of an object in a loaded array of objects in typescript?
So, I cannot wrap my mind around this problem...
Basically, I have some variables and a constructor in a class:
currentUser: UserModel | null = null;
currentServer: ServerModel | null = null;
...
- 125
1
vote
0
answers
15
views
Typescript: map nested object properties to string [duplicate]
I am wondering if it is possible to create a type which maps properties of an object to a string where if a certain property value is an object himself, it is added to the string preceded by a dot. ...
- 725
2
votes
1
answer
708
views
typescript access object property: Element implicitly has an 'any' type
I'm working on a codebase where I need to access a value from the step property.
interface Car {
name: string;
age: number;
color: string;
step: {
something: {
onea:...
- 21
3
votes
2
answers
6k
views
Typescript - How to access a variable object property from a variable object
I'm having some difficulty trying to write a function that takes two inputs:
The name of an object
The name of a property
and prints the value of that property for that object. However, the objects ...
- 75
1
vote
2
answers
2k
views
TypeScript: Add custom type to a single property in object
Let's say there is an object that looks like this:
const object = {
prop: "prop",
typedProp: "type-1",
};
I want the typedProp property to only accept the following values: &...
- 375
1
vote
1
answer
568
views
Cannot access property of object in an array
Pretty straightforward question, not sure what I've got wrong syntactically here.
const options: object[] = [
{ value: 0, label: 'Ab' },
{ value: 1, label: 'A' },
{ value: 2, label: 'Bb' }...
- 643
0
votes
1
answer
57
views
Accessing object property in Typescript using variable
I have following model
interface Budget {
budget_july?: number,
budget_august?: number,
budget_september?: number,
budget_october?: number,
budget_november?: number,
...
- 511
-1
votes
1
answer
69
views
Typescript - Object display correct datas but properties are undefined on access
When I log the entire object all the datas are displayed but when I try to access the properties they are undefined. As if the object's properties where not mapped to their datas.
A component ...
0
votes
3
answers
462
views
Property 'firstName' does not exist on type 'object'
function marge(obj1: object, obj2: object) {
return Object.assign(obj1, obj2);
}
const margeObj = marge( {firstName: "John"}, {lastName : "Doe"} );
console.log(margeObj....
- 1,063
1
vote
1
answer
2k
views
Dynamically assign property of object with mixed-type properties in TypeScript
Suppose I have an object with some properties that are not all the same type, and I want to assign a dynamic value to a dynamically identified property. This works perfectly fine in JavaScript, but ...
- 2,415
1
vote
1
answer
2k
views
TypeScript copy object's properties to create a new object
I want to create a new object of type 'B' from the object of type 'A' that extends 'B'.
I've tried to copy properties of type 'B' from the object with type 'A' and that gives me an error.
Could you ...
- 308
0
votes
2
answers
7k
views
Angular - Property does not exist on type 'Object'
I'm having a few problems with Angular.
I'm trying to iterate through a JSON API but I'm receiving the message
Property does not exist on type 'Object'.
Not exactly that, the error is
Property '...
1
vote
1
answer
384
views
Assigning TypeScript property values with = vs :
I have the following Angular component:
@Component({
...
template: `
<div>{{getDisplayValue(value)}}</div>
<button (click)="value= { display: 'one' }">1</button&...
- 2,586
0
votes
0
answers
31
views
How to change dynamically the name of a variable in an interface when creating the object?
I'm trying to build an little 2D map editor. My basic map slot is an class with x and y properties. When building the map, a function creates all maps slots according to the requested map size and ...
- 1
0
votes
1
answer
703
views
How to extract part of the properties' keys of an object as a union type?
In Typescript, I'd like to do the following:
Typescript playground
type MY_OBJECT = {
fooA: string,
fooB: string,
fooD: string,
fooE: string,
fooF: string
}
type SOME_PROPS = Extract<...
- 30.4k