Javascript array reduce method tutorial example explained

#javascript #reduce #method

// ********* index.js *********

// reduce() = Reduces an array to a single value
// The return value of the callback
// function is the accumulated result,
// and is provided as an argument in
// the next call to the callback function.

let letters = ["H", "E", "L", "P"];

function combineLetters(total, nextLetter, index, array){

return total + nextLetter;
}

let word = letters.reduce(combineLetters);

console.log(word);

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