JavaScript Where To

Definition: In a real website, JavaScript lives inside <script> tags or in a separate .js file linked to the page. Here, the editor runs it for you so you can focus on the language.

Example 1 — inside a web page

This is how JavaScript appears in an HTML file (so you recognise it later):

<script>
  console.log("Hello from a web page");
</script>

Example 2 — ways to show output

• console.log(...) — prints to the console (used here)
• alert(...) — a pop-up box in a real browser
• Writing into the page itself (you will learn this with the DOM)

console.log("A simple message");
console.log("You can log numbers too:", 42);

Example 3 — logging several values

console.log accepts many values separated by commas and prints them on one line:

let name = "Sam";
let age = 20;
console.log("Name:", name, "Age:", age);

💡 Tip: console.log is your best friend for checking what your code is doing.