How to write your first line of code
Let us write your first line — right now
Open any webpage. Press F12 on your keyboard (or right-click anywhere and choose Inspect). A panel opens up. Click the tab that says Console.
That console is a place where you can talk to JavaScript directly. Type this and press Enter:
console.log("Hello, world!");
You just wrote JavaScript! console.log(...) is JavaScript's way of saying "print this so I can see it." Whatever you put inside the quotes shows up.
What is actually happening here?
Let me break that single line down, piece by piece:
console→ think of it as a notepad for developers..log()→ the action: "write something down"."Hello, world!"→ the message (text always goes inside quotes).;→ a full stop. It tells JavaScript "this instruction is finished".
Now try changing it
Do not just copy — play with it. Type your own name:
console.log("My name is Govind");
console.log(5 + 3);
Notice the second line has no quotes around 5 + 3. So JavaScript calculates it and prints 8. But this one:
console.log("5 + 3");
...prints 5 + 3 as plain text, because quotes mean "treat this as words, not maths".
Why does this tiny thing matter? Because this one idea — quotes mean text, no quotes mean a real value — will save you from a hundred bugs later. Remember it.
That is it. You are officially writing code now. Next, we will learn how to store information so our programs can remember things.