- Use Array.prototype.fill() to create an array of all the numbers in the target range.
- Use Array.prototype.map() and the exponent operator (**) to raise them to power and Array.prototype.reduce() to add them together.
- Omit the second argument, power, to use a default power of 2.
- Omit the third argument, start, to use a default starting value of 1.
//#Source https://bit.ly/2neWfJ2 const sumPower = (end, power = 2, start = 1) => Array(end + 1 - start) .fill(0) .map((x, i) => (i + start) ** power) .reduce((a, b) => a + b, 0); console.log(sumPower(10)); console.log(sumPower(10, 3)); console.log(sumPower(10, 3, 5));
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