How to: fmt.Println in JavaScript

Outputting to your shell or terminal to inform the user of the outcome of a program or valuable debugging information is an essential of every programming language.

GOlang

In Golang you can output text and variables to the terminal via various methods, but fmt is a commonly used one.

package main

import "fmt"

func main() {
  fmt.Println("Hello World!")

  // Hello Jonathan!
  name := "Jonathan"
  fmt.Printf("Hello %s!\n", name)
  fmt.Printf("1 + 1 is %d!\n", 1+1)
  // %v for unknown variable types
  fmt.Printf("unknown variable type: %v without newline", 40.1)
}

JavaScript

In JavaScript console.log will print to the browser console or your shell where node.js is running your file:

// strings
console.log('Hello World!');
// multiple parameters
console.log('Hello', 'World!', 666);