JS-015
Educational JavaScript lesson graphic for console.log(): Learn how to display values in the JavaScript console
Beginner2 min~2 min read#console#console.log#debugging

console.log()

Show the value

Goal

Learn how to display values in the JavaScript console.

Explanation

  • console.log() prints a value to the console.
  • It is one of a programmer's most important tools for checking how a program works.
  • With console.log() you can see variable values, calculation results, or messages.
  • The console helps find bugs and understand what is happening inside the program.
  • While learning, almost every example is worth checking with console.log().

Analogy

console.log() is like a flashlight. It shines a light on what is inside your program.

Code

let name = "Vitalii";

console.log(name);

Result: Vitalii

Common mistake

Some beginners expect console.log() to show information on the website page. In reality, the output goes only to the developer console.

Remember

  • ✦ console.log() shows values.
  • ✦ The result appears in the console.
  • ✦ It is the main tool for checking code.

Quick Quiz

Where does the output of console.log() appear?

Resources