Strict Equality in Practice — JS Technical Interview Questions & Answers

Why === is usually the safer default.

Strict Equality in Practice

  • Strict Equality in Practice (js) is a JS topic. In plain words you use it for a short Strict Equality in Practice js example in a script in the browser. Don’t start with a slogan — start with that picture.
  • Smallest example: the smallest Strict Equality in Practice js example you can type. Type it, run it, and say what you see. If you can do that from memory, you know Strict Equality in Practice (js).
  • From the example next to this theory: Why === is usually the safer default.
  • Trap: only saying “Strict Equality in Practice js” with no example. Fix that before you talk about advanced JS.
  • Viva: what is Strict Equality in Practice (js)? Then show the smallest Strict Equality in Practice js example you can type. Then name the trap.

Technical Interview Tip: What is Strict Equality in Practice (js)? Show this: the smallest Strict Equality in Practice js example you can type. Trap: only saying “Strict Equality in Practice js” with no example.

Code Examples for Strict Equality in Practice

Strict Equality in Practice — working example

console.log(2 == "2");   // true  — coerces
console.log(2 === "2");  // false — strict
console.log(typeof null); // "object" (historic quirk)
console.log(typeof undefined); // "undefined"
console.log(null == undefined);  // true
console.log(null === undefined); // false

Strict Equality in Practice — == coerces types; === does not. Prefer === and explicit conversions.

How to Explain Strict Equality in Practice to an Interviewer

What is Strict Equality in Practice (js)?

Used for a short Strict Equality in Practice js example a script in the browser Not just the heading

Give one small example of Strict Equality in Practice (js).

the smallest Strict Equality in Practice js example you can type Why === is usually the safer default

What mistake do beginners make with Strict Equality in Practice (js)?

only saying “Strict Equality in Practice js” with no example Show the fix

Where do you use Strict Equality in Practice (js)?

a script in the browser a short Strict Equality in Practice js example