console.log()

Prints a value or message to the browser or terminal console for debugging or output.

Part of: JavaScript Coding without HTML and CSS — Module 1, ACARA Digital Technologies Years 7–8 — Programming with Control Structures and Functions (JavaScript) — Module 3, ACARA Digital Technologies Years 9–10 — Modular and Object-Oriented Programming (JavaScript) — Module 1

Understanding console.log() in JavaScript

What it does: console.log() is exactly this method. Commas let console.log() print several values at once. JavaScript is case-sensitive - 'console' must be lowercase. The value to print must go inside round brackets. The correct method name is 'log', not 'print'. Every opening parenthesis needs a matching closing one. JavaScript booleans are lowercase: true and false. This code prints the string "Hi!" to the console.

Common mistakes: 'console' must be lowercase - a capital C causes an error. 'console' is misspelled as 'consle'.

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Free printable worksheet with full answer key — or add this module to a class and your students practise it interactively.

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This module's key terms are also in a printable crossword (Modules 1–10) and word search (Modules 1–29).

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Learning

Duo

Does console.log() print output to the console?

YesNo

Matches

Console.log("Hi");

↓

Wrong - 'console' must be lowercase

Applying

Meanings

Term

console.log()

Meaning

Prints a value or message to the browser or terminal console for debugging or output.

Practice

console.log("Hello, world!");

Testing

Gaps

("Hi!")

Check Answer

Spots

1Console.log("Hi");

2console.log("Bye");

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Quick Questions

1. Does console.log() print output to the console?

A. No

B. Yes ✓

console.log() is used to print values for debugging or output.

2. Is 'Console.log' with a capital C correct syntax?

A. No ✓

B. Yes

JavaScript is case-sensitive - 'console' must be lowercase.

3. Can console.log() print multiple values separated by commas?

A. No

B. Yes ✓

console.log(1, 2, 3) prints all three values at once.

4. Does console.log() require parentheses around its value?

A. Yes ✓

B. No

The value to print must go inside round brackets.

5. Is 'console.print()' a real JavaScript method?

A. No ✓

B. Yes

The correct method name is 'log', not 'print'.

Match the Pairs

console.log("Hi!") → Prints "Hi!" to the console

console.log(5 + 2) → Prints the result of 5 + 2

The method used to print output to the console → console.log()

Prints multiple values separated by commas → console.log(1, 2, 3)

Console.log("Hi"); → Wrong - 'console' must be lowercase

console.log("Hi); → Wrong - the string is missing its closing quote

Key Term

console.log()

Prints a value or message to the browser or terminal console for debugging or output.

Fill in the Blanks

1. console.log("Hi!")

Hint: Type the console method that prints to the console.

2. console.log("Bye!")

Hint: Type the method name that comes after 'console.'.

3. console.log(5 + 2)

Hint: Type the console method that prints to the console.

4. console.log(score)

Hint: Type the method name that comes after 'console.'.

5. console.log(name)

Hint: Type the console method that prints to the console.

Spot the Error

Question 1

A Console.log("Hi");

B console.log("Bye");

C console.log(5);

Line A — 'console' must be lowercase - a capital C causes an error.

Question 2

A consle.log("Yo");

B console.log(1);

C console.log(2);

Line A — 'console' is misspelled as 'consle'.

Question 3

A console.log(1);

B console.log 2;

C console.log(3);

D console.log(4);

Line B — Missing parentheses around the value to print.

Question 4

A console.log("A");

B console.print("B");

C console.log("C");

D console.log("D");

Line B — 'print' isn't a real console method - use 'log' instead.

Question 5

A let x = 1;

B console.log(x);

C console.log(x;

D let y = 2;

E console.log(y);

Line C — Missing closing parenthesis before the semicolon.

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