Introduction to Javascript

Which of the following is a core capability of JavaScript?

What is the purpose of client-side scripting with JavaScript?

Which of the following is the best practice for including JavaScript in an HTML document?

What is a benefit of using external JavaScript files?

Which JavaScript method is used to display content in the browser's JavaScript console?

What are JavaScript statements composed of?

What does JavaScript whitespace refer to?

What are the two types of values recognized by JavaScript?

Which keyword is used to created variables in JavaScript?

What is the purpose of a function in JavaScript?

JavaScript is exclusively used for server-side scripting.

In JavaScript, all statements must end with a semicolon.

JavaScript ignores whitespace like extra spaces and tabs.

A JavaScript expression always performs an action.

In JavaScript, var is the only way to declare a variable.

Variables declared with const cannot be reassigned.

A JavaScript function is not executed until it is called.

JavaScript functions can only contain letters in their name.

In JavaScript, function hoisting means you must define the function before calling it.

Local scope refers to variables accessible throughout the entire script.

What is the primary purpose of an object in JavaScript?

Which of the following is an example of an object's attribute (property)?

What is the term for the actions that an object can perform?

In JavaScript, how can you access the value of an object's property?

What does it mean for objects in JavaScript to be 'dynamic'?

Which of the following is NOT a built-in JavaScript object?

Which built-in JavaScript object should be used to work with dates and times?

How are items stored in an array?

Which of the following object methods returns the month as an index number?

A variable in JavaScript holds a:

An object in JavaScript is simply a container for grouping different pieces of related data together.

Attributes, also known as behaviors, define the characteristics of an object.

In JavaScript, you can only access object properties using dot notation.

JavaScript objects are static, meaning you cannot add or remove properties after the object is created.

The Math object is a built-in JavaScript object that has a constructor method.

You should use the new keyword with String, Number, or Boolean objects in JavaScript.

All built-in JavaScript objects inherit from Object.prototype.

A JavaScript array can only store values of the same data type.

Arrays in JavaScript are indexed starting from 1.

The JavaScript getDate() method returns the weekday as an index number (0-6).

What is the primary purpose of control structures in JavaScript?

What does the if statement do in JavaScript?

What keyword is used to provide an alternative execution path when the condition in an if statement is false?

Which statement is used to perform different actions based on different conditions?

What happens when JavaScript reaches a break keyword inside a switch block?

What is a loop in JavaScript?

Which of the following is a component of a for loop?

What is the purpose of the while loop?

What is the main difference between a while loop and a do...while loop?

What does the continue keyword do in a loop?

Control structures determine the execution flow of a program.

The if statement executes code regardless of the condition.

The else keyword provides an alternative execution path when the if condition is false.

A switch statement can only test for true or false conditions.

In a switch statement, it is always mandatory to have a default case.

The break keyword in a switch statement prevents the execution of subsequent cases.

A for loop contains an initializer, a condition, and a modifier.

A while loop checks the test condition after executing the statements inside the loop.

A do...while loop always executes its code block at least once.

The continue keyword completely terminates a loop.

What is the top-level object in the DOM hierarchy?

Which property of the window.screen object provides the total width of the screen in pixels?

Which property of the window.screen object gives the bit value indicating the color range?

Which method displays a simple alert box with an 'OK' button?

Which method displays a dialog box with an input field where a user can enter text?

Which property of the document object can be used to get or set the title of the current document?

Which property provides the full URL of the current document?

To return the number of forms in a document, you can use:

Which method is used to access a single element by its ID?

What does the load event fire?

The DOM is not essential for creating interactive web applications.

JavaScript can only remove existing HTML elements and attributes; it cannot add new ones.

The top-level DOM window object has a 'screen' child object that provides properties describing the user's monitor resolution.

Window.screen.colorDepth represents colors in a hexadecimal format.

The top-level DOM window object provides exactly five methods for displaying dialog messages to the user.

The document object is a child of the 'window' object.

document.title only retrieves the title, it cannot be used to set it.

To get the number of images in a document, you would use document.images.amount.

The getElementsByID() method retrieves all elements with a given ID.

When using document.write(), the written content is appended after all existing HTML content.