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Shop beginner-friendly tech courses, practical training tutorials, data tools, web development content, automation, and digital skills courses from Palace Tech Hub.
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JavaScript is a programming language used to make websites interactive and dynamic.
👉 In simple terms:
JavaScript = behavior + action on a website
JavaScript helps you:
👉 Think of it like this:
<script>
alert("Hello World!");
</script>
<script src="script.js"></script>
alert("Welcome to JavaScript!");
👉 This displays a popup message.
let name = "John";
let age = 20;
👉 Variables store information.
"Hello"10true / falsefunction greet() {
alert("Hello!");
}
👉 Call it:
greet();
JavaScript responds to user actions like clicks.
<button onclick="sayHello()">Click Me</button>
<script>
function sayHello() {
alert("You clicked the button!");
}
</script>
DOM allows JavaScript to control HTML.
Example:
document.getElementById("demo").innerHTML = "Hello World!";
👉 This changes content on a page.
let age = 18;
if (age >= 18) {
alert("You are an adult");
} else {
alert("You are underage");
}
for (let i = 1; i <= 5; i++) {
console.log(i);
}
<!DOCTYPE html>
<html>
<body>
<h2 id="text">Hello</h2>
<button onclick="changeText()">Click Me</button>
<script>
function changeText() {
document.getElementById("text").innerHTML = "Welcome!";
}
</script>
</body>
</html>
👉 When clicked, the text changes.
👉 JavaScript makes websites:
👉 “HTML gives structure, CSS gives beauty, but JavaScript gives life to your website.”
The Internet of Things (IoT) refers to physical devices connected to the internet that can collect, send, and receive data.
👉 In simple terms:
IoT = everyday objects + internet + data
👉 IoT allows devices to:
Basic flow:
Physical objects like:
Sensors collect data like:
Devices connect using:
Stores and processes data.
Apps or dashboards where users interact with devices.
👉 Smart light system:
Students can:
👉 IoT is about:
👉 “IoT is not just about smart devices—it is about creating smart solutions for real-world problems.”
Hobby (Free) Plan You can have up to 200 projects (websites/apps) under one account. Each project can have its own: Production deploy...