// from https://snippet.zone

const numbers = [1, 2, 3];
const letters = ['a', 'b', 'c'];
const symbols = ['!', '@', '#'];
 
// use spread operator
const combined = [...numbers, ...letters, ...symbols];
console.log('first', combined);
 
// older way
const combinedConcat = numbers
  .concat(letters)
  .concat(symbols);

// :eyes: in the console
console.log('second', combinedConcat);

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