I guess it is quite regular issue, but for some reason I cannot find the answer on the net.
So I have a class A:
class A {
const data = {...}
}
And a class B in a separate js file.
class B {
// how can I get const data here?
}
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2Even if someone answers you, I don't think this is your real code for which you cannot guarantee the answer will work. So the code does not make sense which you have provided.Ankit Agarwal– Ankit Agarwal2018-11-22 09:14:33 +00:00Commented Nov 22, 2018 at 9:14
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@AnkitAgarwal - don't complicate things by trying to judge code snippets on the merit of how 'real' they are. Just take it as a hypothetical, doesn't need to be a real-world scenario as long as it is specific enough. Not specific? Then request clarity.user10058046– user100580462018-11-22 09:15:19 +00:00Commented Nov 22, 2018 at 9:15
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@Barth - in which context? Web? If so, depending on what it is you want to share, a variable on the page will be globally accessible to all. Whether this makes sense design-wise depends on the requirements.user10058046– user100580462018-11-22 09:15:52 +00:00Commented Nov 22, 2018 at 9:15
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@JᴀʏMᴇᴇ then why are you asking the above question to OP if you think I am complicating the things.Ankit Agarwal– Ankit Agarwal2018-11-22 09:17:01 +00:00Commented Nov 22, 2018 at 9:17
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@AnkitAgarwal - what are you talking about? We were both making 2 entirely different points!? I'm asking for clarification.user10058046– user100580462018-11-22 09:25:04 +00:00Commented Nov 22, 2018 at 9:25
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2 Answers
You could use composition, and instantiate new instance of class A inside of constructor of class B.
class A {
constructor() {
this.data = { foo: "bar" };
}
}
class B {
constructor() {
this.instanceOfA = new A();
console.log(this.instanceOfA.data);
}
}
console.log(new B());
2 Comments
Murakami
Thank you for your answer. What if in class A my variable is located in the body(I mean not in the constructor)?
Borys Kupar
I don't think that's valid syntax of ES6. Or do you use some other version?
Here is data passed by function/event in two class:
class A {
constructor(name) {
console.log(name)
}
}
class B {
y(){
return "ram"
}
}
let resultFromB = (new B().y());
new A(resultFromB)
