Question

Which of the following is an inbuilt function of JavaScript?

• A. validateForm()
• B. form()
• C. alert()
• D. hello()

Hint:

Common built-in JavaScript dialog functions include alert(), confirm(), and prompt().

Answer 1

The Correct Option is C

Step 1: Understand built-in functions in JavaScript.

JavaScript provides several built-in functions that are already defined within the language. These functions allow developers to perform common tasks such as displaying messages, handling data, and interacting with the browser.

Step 2: Explain the alert() function.

The alert() function is a built-in JavaScript function used to display a popup message box on the screen. It is commonly used for notifications, warnings, or debugging purposes.

Example:

alert("Welcome to the website");

When executed, this statement shows a dialog box containing the message.

Step 3: Analyze other options.

validateForm(): This is usually a user-defined function created by developers for validating form inputs.

form(): This is not a standard JavaScript built-in function.

hello(): This is also not a built-in function and would normally be defined by a programmer if needed.

Step 4: Conclusion.

Therefore, the correct inbuilt function of JavaScript among the given options is alert().