Which statement correctly adds an element at index 2 of an array?

What is the output of 0 == false?

What is the output of 0 === false?

What is the output of:
console.log(0.1 + 0.2 == 0.3);

What is the output of console.log(null == undefined)?

How do you change the style of an element with ID "demo"?

Which of the following is jQuery syntax to hide an element with ID "demo"?

How do you set the text of an element in jQuery?

Which is the correct way to run code when the document is ready in jQuery?

Output of : let y = 10;
y = 20;
console.log(y);

Output of : const z = 15;
z = 25;
console.log(z);

Output of : let a = 5;
a += 3;
console.log(a);

Output of : let person = {name: "Ali", age: 20};
console.log(person.name);

Output of : <button onclick="alert('Hi')">Click me</button>

Output of : let str = "Hello";
console.log(str.length);

Output of : let name = "Ali";
console.log(`Hello ${name}`);

Output of : let age = 20;
console.log(`I am ${age} years old`);

Which symbol is used for addition in JS?

What is the output of console.log( 5 + "5") ?

Output of : console.log(5 + 2);

What is the output of :
function add(a, b) {
return a + b; } console.log(add(2, 3));