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hey correct my javascript code which i need in es6 version

Of course! I'll be happy to help you convert your JavaScript code to the ES6 version. Please provide me with the code you'd like me to assist you with.

'use strict';

class Car {
  constructor(make, speed) {
    this.make = make;
    this.speed = speed;
  }

  accelerate() {
    this.speed += 10;
    console.log(`${this.make} is going at ${this.speed} km/h`);
  }
  brake() {
    this.speed -= 5;
    console.log(`${this.make} is going at ${this.speed} km/h`);
  }
  car1 = Car('BMW', 120);
  car2 = Car('Mercedes', 95);
}
accelerate();

Sure! I have made some corrections to your code to align it with ES6 syntax. Here's the corrected code:

'use strict';

class Car {
  constructor(make, speed) {
    this.make = make;
    this.speed = speed;
  }

  accelerate() {
    this.speed += 10;
    console.log(`${this.make} is going at ${this.speed} km/h`);
  }

  brake() {
    this.speed -= 5;
    console.log(`${this.make} is going at ${this.speed} km/h`);
  }
}

const car1 = new Car('BMW', 120);
const car2 = new Car('Mercedes', 95);

car1.accelerate();

Here's what has changed:

Removed the car1 and car2 assignments from within the class definition as they should be separate instances outside the class.
Created car1 and car2 instances using the new keyword and the Car constructor.
Called the accelerate method on the car1 instance outside the class.