JavaScript Functions and Events Quiz

Describe the use of functions and events in Java Scripting

Explain how functions work in JavaScript

Identify the different events that JavaScript can handle

What is the purpose of the 'add' function in the example?

• To add two numbers

• To subtract two numbers

• To multiply two numbers

• To divide two numbers

What does the 'escape' function do?

• Encodes an ASCII string to ISO Latin-1

• Converts an ISO8859-1 character set to ASCII

• Evaluates if value is not a number

• Determines the type of a value

What does the 'isNaN' function evaluate?

• If value is a number

• If value is not a number

• If value is a string

• If value is an object

What does the 'alert' function do?

• Displays an alert box with a message

• Asks whether the user would continue or cancel

• Asks for an input from the user

• None of the above

What event does 'onClick' handle?

• User clicked on the object

• User has lost focus of an object

• User has changed the object

• User submitted a form