README file to answer the following question

1. What is the difference between var, let, and const? Ans: var : function-scoped, re-declarable.
   let : block-scoped, re-assignable, not re-declarable.
   const : block-scoped, cannot be re-assigned. example: var a = 10;
   let b = 20;
   const c = 30;

2. What is the difference between map(), forEach(), and filter()? Ans: map() : returns a new array .

forEach() : loops through but returns undefined.

filter() : returns a new array with elements that match a condition. example: [1,2,3].map(x => x2);
[1,2,3].forEach(x => x2); // returns undefined [1,2,3].filter(x => x>1);

3. What are arrow functions in ES6? Ans: Shorter syntax for functions. example: const add = (a,b) => a+b;
   console.log(add(2,3));

4. How does destructuring assignment work in ES6? Ans: Extracts values from arrays/objects into variables.

example: const [x,y] = [1,2];
const {name, age} = {name:"Ali", age:25};

5. Explain template literals in ES6. How are they different from string concatenation? Ans: Use backticks (), and multi-line strings. example: const name = "Ali"; console.log(Hello, ${name}!`);