example1.js

const pets = ['Cat', 'Dog', 'Bird', 'Fish', 'Frog', 'Hamster', 'Pig', 'Horse', 'Lion', 'Dragon'];
console.log(pets[0]);
console.log(pets[1]);
console.log(pets[2]);
console.log(pets[3]);

//This code cant fullfil DRY. The code is repeated but we can minimize it. The following code snippt
//is the DRY vesrion of the above code.

for(let i=0;i<pets.length;i++){
  console.log(pets[i])
}

example2.js

const greet = (message, name) => {
  console.log(`${message}, ${name}!`)
}

greet('Hello', 'John');
greet('Hola', 'Antonio');
greet('Ciao', 'Luigi')

//The above code fullfill DRY principle because 
//each object reuse the same console.log(). 
//The object is created based on the template object.