Array.isArray(value)

Array.isArray([1, 2, 3]) true

<meta name="color-scheme" 
content="dark light">

const a = [1, 2, 3];

const b = a;

b.push(4);

console.log(a);

Act as a Senior Front-End interviewer.

Conduct a realistic interview.
Ask only one question at a time.

Questions should cover JavaScript, React, CSS, Browser, and Performance.

Do not reveal the correct answer until I respond.

After each answer:

* Give me a score from 0 to 10.
* Point out my mistakes.
* Ask a harder related question.

At the end, tell me how ready I am for a Junior / Mid / Senior position.

console.log(0.1 + 0.2 === 0.3);

روشی برای مقایسه تغییرات قبل از آپدیت DOM واقعی تا رندر سریع‌تر انجام بشه.