What will be the output obtained by last "shift ()" in the given code of JavaScript? var a =[]; a.unshift(5); a.unshift(22); a.shift(); a.unshift(3,[4,5]); a.shift(); a.shift(); a.shift();

What will be the output obtained by last "shift ()" in the given code of JavaScript?

var a =[];  
a.unshift(5);  
a.unshift(22);  
a.shift();  
a.unshift(3,[4,5]);  
a.shift();  
a.shift();  
a.shift();

Correct Answer : A

Realated Questions

What will be the output of the following JavaScript code?

const string1 = [1,2,3];
const string2 = [4,5,6,7,8,9,10];  
const result = string1.concat(string2);  
console.log(result);