30 Questions
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
Which of the following best describes the purpose of JavaScript in web development?
To enhance user experience through interactive web elements
One of the advantages of server-side programming over client-side programming is:
Ability to connect to databases and write files
What type of language is JavaScript considered to be?
Lightweight programming language ('scripting language')
Which of the following is a common task that JavaScript can perform on a user's computer?
Perform calculations for form validation
In client-side scripting, what advantage does JavaScript offer in terms of user interaction?
Quick changes to a page without server interaction
Which of the following is a similarity between JavaScript and PHP?
Both have built-in regular expressions
What is a key difference mentioned between JavaScript and PHP?
Javascript is more procedural while PHP is more object-oriented
Where should the
In the head section
Which of the following accurately describes JavaScript error handling?
Errors are mostly silent with a few exceptions
What is a common characteristic of JavaScript and Java?
Similar rules and syntax
"join" in JavaScript is used for?
Converting an array to a single string with a delimiter
What is the purpose of the 'typeof' keyword in JavaScript?
To check the type of a variable
In JavaScript, what does the null value represent?
A variable that has not been assigned a value
Which of the following is NOT a method of the Math object in JavaScript?
increment
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
Which operator in JavaScript is used for finding the remainder of a division operation?
%
What does the 'var' keyword signify when declaring variables in JavaScript?
It defines a variable within a function scope
What type of programming is characterized by writing programs driven by user events?
Event-driven programming
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.
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
What is an example of an event handler attribute in HTML?
onclick
Why is popping up an alert window considered disruptive and annoying in user experience?
It interrupts the user's flow and forces immediate attention.
In JavaScript, where should statements be placed to ensure they are evaluated in response to user events?
Functions
What is the purpose of the document object model (DOM) in JavaScript?
To manipulate elements' state on an HTML page.
How can you change the color of a textbox using JavaScript?
By using the 'style.color' property of the textbox element.
Which method is used to access an element by its id in JavaScript?
getElementById
What does the innerHTML property allow you to do with elements in the DOM?
Change the text inside most elements.
How can you change a paragraph to have a red color using JavaScript?
Use the 'color' property to set it to red.
Which property is used to change the font size of an element in JavaScript?
'font-size'
Learn the basics of client-side scripting using JavaScript in course CS380. Understand the benefits of using client-side programming, such as faster user interface, efficiency in making quick changes to the page, and the ability to respond to user actions like clicks and key presses.
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