JS Quiz SECE

Which keyword is used for variable hoistering?

• let

• var

• const

• None of the above

Which is not a scope in JavaScript?

• Block Scope

• Nested Scope

• Function Scope

• Object Scope

console.log(true == '1');

• true

• false

• Error

Which array method is used to return a subarray and modify the original array?

• slice()

• splice()

• push()

• split()

What will be the output?

let x = 5+3+"3";
console.log(x);

• 8

• 11

• 83

• None of the above

var x=12;

var y=8;

console.log("x+y");

What will the output of the following program?

(function(){

setTimeout(()=> console.log(1),2000);

console.log(2);

setTimeout(()=> console.log(3),0);

console.log(4);

})();

• 1 2 3 4

• 2 3 4 1

• 2 4 3 1

• 4 3 2 1

(function(a){

return (function(){

console.log(a);

a = 6;

})()

})(21);

• 21

• 6

• 216

• Error

• NaN

Which of the following is a short hand operator?

• +=

• ==

• ++

• =

What will be the output of the following code snippet?

var a = true + true + true * 3;
console.log(a)

• 3

• 9

• Error

• 5