ES6+ Features Interview Questions

What is the main difference between let and var?

Which statement about const is correct?

How do you create a string using template literals?

What will add(5) return if the function is defined as:

function add(a, b = 10) { return a + b; }

Which statement is true about arrow functions?

What is the value of x after this code?

let [x, y] = [10, 20];

What does the following produce?

let arr1 = [1, 2];
let arr2 = [...arr1, 3, 4];

What is the shorthand syntax for { name: name, age: age }?

Which function correctly uses rest parameters to accept multiple arguments?

How do you export a function in ES6 module?