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Size: a a a
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const ar5 = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
const index = [0, 2, 3]
document.querySelector('.b-5').addEventListener("click", () => {
const nums = ar5.filter((item, i) => index.includes(i))
const sum = nums.reduce((accum, item) => accum += item)
console.log(sum)
document.querySelector(".out-5").innerHTML = sum;
});
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const ar5 = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]такое?
const index = [0, 2, 3]
document.querySelector('.b-5').addEventListener("click", () => {
const sum = ar5.reduce((accum, item, i) => index.includes(i) ? accum += item : accum)
document.querySelector(".out-5").innerHTML = sum;
});
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indexes.reduce((acc, i) => acc + ar5[i], 0);
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MU