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• Who is the instructor for Lesson 5?

  Joana Marie C. Tolentino
• What are the learning objectives of this unit?

  1. Describe client-side computation and form validation.
  2. Create a JavaScript-driven form for real-time validation.
  3. Use JavaScript to modify HTML and CSS properties.
  4. Develop an interactive web page with JavaScript.
• What is the purpose of the Window Object in JavaScript?

  To manage browser windows and dialogs
• What is a dialog box in the context of the Window Object?

  A window that performs a simple task
• What global functions can be accessed using the window object?

  window.alert(), window.confirm(), window.prompt()
• What does the confirm() method do?

  It asks for user confirmation before a task
• What buttons are included in the confirm dialog box?

  OK and CANCEL buttons
• What is the syntax for the alert method?

  alert(message);
• What will the following code display: alert("Danger! A virus was detected.")?

  A dialog box with a warning message
• What does the alert() method do?

  Displays a simple message to the user
• What is the syntax for the confirm method?

  confirm(question);
• What does the confirm("Are you sure you want to delete?") prompt the user for?

  Confirmation before deleting
• What is the purpose of the if...else statement?

  To execute code based on a condition
• What is the syntax for an if statement?

  if (condition) { statements } else { statements }
• What will happen if age = 19 and the condition age > 18 is true?

  Message about driving without supervision
• What does the if statement specify?

  A block of code to execute if true
• What will the confirm method return if the user clicks OK?

  True
• What will the confirm method return if the user clicks Cancel?

  False
• What message is displayed if age = 17 and the condition age > 18 is false?

  You need to wait until you're 18
• How does the confirm() method work with an if-else statement?

  • Prompts user for confirmation
  • Executes code based on user's response
  • Displays different messages for true/false conditions