Utility Functions

Qus. 1 : How do you write "Hello World" in an alert box?

1. alert("Hello World");
2. msgBox("Hello World");
3. alertBox("Hello World");
4. msg("Hello World");

Qus. 2 : How do you write "Hello World" in an alert box ?

1. alert("Hello World")
2. alertBox("Hello World")
3. msgBox("Hello World")
4. msg("Hello World")

Qus. 3 : What does the isNaN() function do in JavaScript?

1. It checks if a value is a number
2. It checks if a value is not a number
3. It converts a value to a number
4. It checks if a value is undefined

Programs