Within my TypeScript application, I currently have the following code:
interface Data {
url: string,
// more stuff
}
(...)
export class something() {
public data: Data;
}
method(){
this.data.url = "things";
}
However, every time I attempt to assign a value to data.url, I encounter an error stating that I cannot set the property url of undefined. What mistake am I making here? And what is causing this issue?
Thank you in advance!
1) The correct syntax for a class declaration should be:
export class something {
}
and NOT
export class something() {
}
2) method is declared outside of the class, it should be inside the class
3) this.data is currently undefined and you're trying to access the url property of an undefined variable, resulting in an error.
interface Data {
url: string,
// more details
}
(...)
export class something {
public data: Data;
method(){
this.data = {
url: "something",
// more details
}
}
}
If you need to access method from outside the class, make sure to instantiate the class something.
method() {
let obj = new something();
obj.data = {
url: "something",
// more details
}
}
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