CaptainOfFlyingDutchman · May 8, 2024 16:14 · May 8, 2024 · May 8, 2024 · May 8, 2024 · May 8, 2024
diff --git a/josys-frontend-interview-screening-questions.md b/josys-frontend-interview-screening-questions.md
@@ -26,7 +26,7 @@
 
 ---
 #### Q.When do `useMemo` and `useEffect` run in a component life cycle?
-###### A. `useMemo` runs on before a component renders while `useEffect` runs after component has rendered and is mounted in the browser DOM.
+###### A. `useMemo` runs before a component renders while `useEffect` runs after component has rendered and is mounted in the browser DOM.
 
 ---
 #### Q. Would you choose React `Context` to store the application data or a state manager?

diff --git a/...-frontend-interview-screeing-questions.md → ...frontend-interview-screening-questions.md b/...-frontend-interview-screeing-questions.md → ...frontend-interview-screening-questions.md
diff --git a/josys-frontend-interview-screeing-questions.md b/josys-frontend-interview-screeing-questions.md
@@ -10,7 +10,7 @@
 
 ---
 #### Q. Is `Promise` constructor `async` like `setTimeout` or `sync`?
-###### A. It is `async`.
+###### A. It is `sync`.
 
 ---
 #### Q. What is the difference between `Function.call` and `Function.bind`?

diff --git a/josys-frontend-interview-screeing-questions → ...-frontend-interview-screeing-questions.md b/josys-frontend-interview-screeing-questions → ...-frontend-interview-screeing-questions.md
diff --git a/josys-frontend-interview-screeing-questions b/josys-frontend-interview-screeing-questions
@@ -0,0 +1,37 @@
+### Frontend Screening Interview Questions
+
+---
+#### Q. How do you check if a variable holds an array?
+###### A. Using `Array.isArray` function.
+
+---
+#### Q. How would you generate a long string of a single character?
+###### A. Using `String.repeat` function. Example, `'M'.repeat(255);` will generate 255 `M` characters in a single string
+
+---
+#### Q. Is `Promise` constructor `async` like `setTimeout` or `sync`?
+###### A. It is `async`.
+
+---
+#### Q. What is the difference between `Function.call` and `Function.bind`?
+###### A. `Function.bind` returns a new function with bounded arguments, while `Function.call` just calls the function with the given arguments.
+
+---
+#### Q. What is the difference between `Function.reduce` and `Function.map`?
+###### A. `Function.reduce` acts like a collection aggregator while `Function.map` just returns a new array probably after performing some calculation on the original array's elements.
+
+---
+#### Q. When would you opt for using `Map` instead of a simple `object`?
+###### A. If we have constantly changing object then we would use `Map` for its high performance, while for static objects a simple `object` would work.
+
+---
+#### Q.When do `useMemo` and `useEffect` run in a component life cycle?
+###### A. `useMemo` runs on before a component renders while `useEffect` runs after component has rendered and is mounted in the browser DOM.
+
+---
+#### Q. Would you choose React `Context` to store the application data or a state manager?
+###### A. Use a state manager always, `Context` is used only for light weighted information sharing.
+
+---
+#### Q. What are the advantages of `CSS-in-JS` and `CSS Modules` over the standard CSS in React?
+###### A. These solutions scope the CSS thus a developer is free to use same CSS rule name across the project without having a name collision and rules overriding.