FEW-Js1

What is the correct way to declare a constant variable in JavaScript?

• constant PI=3.14;

• let PI=3.14;

• const pi=3.14

• none above

What will happen if you try to reassign a value to a variable declared with const?

• it will change the value

• it will throw an error

• it will create a new variable

• nothing will happen

what is the answer for this "let num; console.log(num);

• null

• 0

• undefined

• error

Which one of these variable names is NOT valid in JavaScript?

• myVar

• $price

• 1st_name

• _myname

let, var, and const are used to (a)   variables in JavaScript.

Variables created with const must be (a)   during create.

What will be the output?
const num;

num = 5;

console.log(num);

• 5

• undefined

• syntax error

• num

const num = 2;

num = 6;

console.log(num);

• 2

• 6

• 26

• type error

let num=5;

console.log("the value is :"+Num);

• 5

• the value is :5

• The value is :Num

• error

console.log(num)

const num=5;

• 5

• undefined

• error

• num