Update README.md

Author: Sushant2435

README.md

@@ -3,6 +3,7 @@
 ### Index
 1. [Is JavaScript a dynamically typed language or a statically typed language?](#q1-is-javascript-a-dynamically-typed-language-or-a-statically-typed-language)
 2. [What are the different datatypes in JavaScript?](#q2-what-are-the-different-datatypes-in-javascript-most-asked)
+3. [ What is Hoisting in javascript ? (Most asked)](#q3)
 
 ### Q1. Is JavaScript a dynamically typed language or a statically typed language?
 JavaScript is a dynamically typed language. It means all type checks are done at runtime (when the program is executing). So, we can just assign anything to the variable and it works fine.
@@ -14,6 +15,7 @@ console.log(a); // 0
 a = "Hello";
 console.log(a); // "Hello";
 ```
+##
 [Back to Top](#javascript-basics)
 
 ### Q2. What are the different datatypes in JavaScript? (Most asked)
@@ -31,5 +33,12 @@ console.log(a); // "Hello";
 - Array
 - Object
 - Date
-;
+##
+[Back to Top](#javascript-basics)
+
+### Q3. What is Hoisting in javascript ? (Most asked)
+- In other scripting/server side languages, variables or functions must be declared before using it.
+- In javascript, variables and functions can be used before declaring it. The javascript compiler moves all the declarations of variables and functions on top. so there will not be any error. This is called hoisting.
+#### 👉 Interview Tip: Mention buzz word 'temporal dead zone' for let & const in above answer so that interviewer will ask What is temporal dead zone. 😉
+##
 [Back to Top](#javascript-basics)