Alert, Prompt, and Console in JavaScript

JavaScript provides built-in functions to interact with users and developers. These include alert for pop-up messages, prompt for user input, and console for logging and debugging.

🔔 1. alert()

Displays a popup message to the user. It's commonly used for notifications or warnings.

alert("Welcome to JavaScript!");

🧾 2. prompt()

Asks the user to input a value and returns that value as a string.

let name = prompt("What is your name?");
alert("Hello, " + name);

📋 3. console.log()

Outputs data to the browser's developer console. Useful for debugging and inspecting values.

console.log("Page loaded");
let x = 5;
console.log("Value of x is:", x);

🛠 4. Other Console Methods

• console.warn("Warning message") – Shows a yellow warning
• console.error("Error message") – Shows a red error message
• console.table(object) – Displays data as a table

let user = { name: "Alice", age: 30 };
console.table(user);

🎯 Summary

• alert() – Shows popup message
• prompt() – Gets user input
• console.log() – Prints to the developer console