Intro to Client-Side Scripting with Javascript CS380

What is a key advantage of using client-side programming, specifically JavaScript?

Ability to make small, quick changes to a page without waiting for the server (correct)
Access to server's private data
Direct connections to databases
Enhanced security measures

Which of the following best describes the purpose of JavaScript in web development?

To create dynamic web pages with PHP
To secure server data access
To enhance user experience through interactive web elements (correct)
To manage server-side database connections

One of the advantages of server-side programming over client-side programming is:

Ability to connect to databases and write files (correct)
Faster user interface updates
Access to browser information
Improved browser compatibility

What type of language is JavaScript considered to be?

Lightweight programming language ('scripting language') (D) Signup and view all the answers

Which of the following is a common task that JavaScript can perform on a user's computer?

Perform calculations for form validation (D) Signup and view all the answers

In client-side scripting, what advantage does JavaScript offer in terms of user interaction?

Quick changes to a page without server interaction (C) Signup and view all the answers

Which of the following is a similarity between JavaScript and PHP?

Both have built-in regular expressions (A) Signup and view all the answers

What is a key difference mentioned between JavaScript and PHP?

Javascript is more procedural while PHP is more object-oriented (A) Signup and view all the answers

Where should the

In the head section (A) Signup and view all the answers

Which of the following accurately describes JavaScript error handling?

Errors are mostly silent with a few exceptions (C) Signup and view all the answers

What is a common characteristic of JavaScript and Java?

Similar rules and syntax (B) Signup and view all the answers

"join" in JavaScript is used for?

Converting an array to a single string with a delimiter (C) Signup and view all the answers

What is the purpose of the 'typeof' keyword in JavaScript?

To check the type of a variable (D) Signup and view all the answers

In JavaScript, what does the null value represent?

A variable that has not been assigned a value (B) Signup and view all the answers

Which of the following is NOT a method of the Math object in JavaScript?

increment (A) Signup and view all the answers

What happens when you try to multiply a string '2' by a number 3 in JavaScript?

The string is converted to a number and then multiplied (A) Signup and view all the answers

Which operator in JavaScript is used for finding the remainder of a division operation?

% (D) Signup and view all the answers

What does the 'var' keyword signify when declaring variables in JavaScript?

It defines a variable within a function scope (C) Signup and view all the answers

What type of programming is characterized by writing programs driven by user events?

Event-driven programming (D) Signup and view all the answers

How are JavaScript programs different from traditional programs in terms of initiating actions?

JavaScript programs wait for user actions/events, while traditional programs start with a main method. (B) Signup and view all the answers

Which of the following steps is essential for creating a responsive button in HTML?

Choose the control and event of interest, write a JavaScript function, attach the function to the event on the control (B) Signup and view all the answers

What is an example of an event handler attribute in HTML?

onclick (B) Signup and view all the answers

Why is popping up an alert window considered disruptive and annoying in user experience?

It interrupts the user's flow and forces immediate attention. (D) Signup and view all the answers

In JavaScript, where should statements be placed to ensure they are evaluated in response to user events?

Functions (B) Signup and view all the answers

What is the purpose of the document object model (DOM) in JavaScript?

To manipulate elements' state on an HTML page. (B) Signup and view all the answers

How can you change the color of a textbox using JavaScript?

By using the 'style.color' property of the textbox element. (D) Signup and view all the answers

Which method is used to access an element by its id in JavaScript?

getElementById (D) Signup and view all the answers

What does the innerHTML property allow you to do with elements in the DOM?

Change the text inside most elements. (C) Signup and view all the answers

How can you change a paragraph to have a red color using JavaScript?

Use the 'color' property to set it to red. (B) Signup and view all the answers

Which property is used to change the font size of an element in JavaScript?

'font-size' (D) Signup and view all the answers