JavaScript Examples for Interactive Web Pages: Grade 7 CS Edition

📚 Quick Study Guide

• 🖱️ JavaScript makes web pages interactive.
• ✏️ You can change what's on the screen after the page loads.
• ⏰ JavaScript can respond to user actions, like clicks and typing.
• 🎨 It's different from HTML (structure) and CSS (style).
• 🧮 Variables store information that JavaScript uses.
• 🚀 Functions are blocks of code that do specific tasks.
• 🚥 Conditional statements (if/else) make decisions.

Practice Quiz

1. Which of the following is NOT a common use of JavaScript on web pages?
   1. Adding animations
   2. Changing website colors
   3. Validating user input
   4. Defining the structure of the page
2. What does JavaScript use to store information?
   1. Functions
   2. Variables
   3. HTML tags
   4. CSS classes
3. What is a function in JavaScript?
   1. A type of variable
   2. A block of code that does a specific task
   3. A way to style HTML elements
   4. A way to create HTML elements
4. Which of these lets your code make decisions based on a condition?
   1. Variable assignment
   2. Function definition
   3. Conditional statement (if/else)
   4. HTML element
5. What is the main purpose of HTML?
   1. To style web pages
   2. To add interactivity to web pages
   3. To define the structure of web pages
   4. To run JavaScript code
6. What is the main purpose of CSS?
   1. To define the structure of web pages
   2. To style web pages
   3. To add interactivity to web pages
   4. To run JavaScript code
7. Which of the following is an example of a user action that JavaScript can respond to?
   1. A web page loading
   2. A user clicking a button
   3. A user typing in a text box
   4. All of the above