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Front end engineer Interview Questions

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There was not many questions really.

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Given an array, return nth number of array elements.

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Write an emitter class: /* emitter = new Emitter(); // 1. Support subscribing to events. sub = emitter.subscribe('event_name', callback); sub2 = emitter.subscribe('event_name', callback2); // 2. Support emitting events. // This particular example should lead to the `callback` above being invoked with `foo` and `bar` as parameters. emitter.emit('event_name', foo, bar); // 3. Support unsubscribing existing subscriptions by releasing them. sub.release(); // `sub` is the reference returned by `subscribe` above

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What will be the output of "console.log(0.1 + 0.2);"?

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Observables and promise

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What salary was I looking for?

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- Develop in React a simple recipe app

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Without using any ES6 features (including classes), could you show me how you would mimic the functionality of a class in JavaScript?

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In JavaScript, what is the difference between “var” and “let”?

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Public transportation monitor

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