Question 1: Difference Between "null" and "undefined" data type with example? Question 2: What type of variable should you initialize at the time of declaration? Question 3: Guess the Output and Explain Why?
let languages = "java javaScript python cSharp";
let result = languages.lastIndexOf("S");
console.log(result)Question 4: Guess the Output and Explain Why?
let variable = "hello programmers";
let result = Number(variable);
console.log(result);Question 5: Guess the Output and Explain Why?
let num1 = 32;
let num2 = "32";
let result1 = num1 !== num2;
let result2 = num1 != num2;
console.log(result1,result2);Question 6: Guess the Output and explain Why?
let str = "Hello Programmers";
let result = str.includes("r");
console.log(result);Question 7: Guess the Output and Explain Why?
let num1 = 2;
let num2 = 5;
let result = num1**num2*2;
console.log(result);Question 8: Guess the Output and Explain Why?
let num1 = [1,2,4,5];
let num2 = [6,5,8,0];
let result = num1.concat(num2);
console.log(result)Question 9: Guess the Output and Explain Why?
let a = 5;
let b = 7;
let c = 8;
let result = a<b>c;
console.log(result)
