Use of const in a Javascript class

Question

In my JS component class, I have the following code at the top;

const { getOwner } = Ember;

What exactly does it mean ? Is the purpose to avoid code repetition ?

What exactly are you asking about? The const keyword or the destructuring assignment? — Sebastian Simon
– Sebastian Simon, Commented May 15, 2018 at 10:01
It's just a way of getting 'getOwner' value from 'Ember' object — Vishal-L
– Vishal-L, Commented May 15, 2018 at 10:03

Harish Soni · Accepted Answer · 2018-05-15 10:06:46Z

This is a new feature of JS present in ES6. This is known as object destructure.

If you have an object like this.

 const obj = { name: 'Stack Overflow' }; const { name } = obj; console.log(name);

You can take a reference -> Here for Destructure

And yeah about the const keyword. The const keyword is used to declare a constant variable which is going to be same for the whole

and for const -> Here

try{ const a = 10; a =12; }catch(e){ console.log(e); }

Muhammad Usman · Accepted Answer · 2018-05-15 10:04:40Z

Is the purpose to avoid code repetition.

I don't really think so.

It is just a destructing assignment to assign Ember object's getOwner property to variable getOwner in your code. And const is there to make sure it is not overwritten by some other assignment

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