Сумма всех чисел в массиве JavaScript
const arrSum = arr => arr.reduce((a,b) => a + b, 0)
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const arrSum = arr => arr.reduce((a,b) => a + b, 0)console.log(
[1, 2, 3, 4].reduce((a, b) => a + b, 0)
)
console.log(
[].reduce((a, b) => a + b, 0)
)const sum = arr => arr.reduce((a, b) => a + b, 0);arr.reduce((a, b) => a + b)function getArraySum(a){
var total=0;
for(var i in a) {
total += a[i];
}
return total;
}
var payChecks = [123,155,134, 205, 105];
var weeklyPay= getArraySum(payChecks); //sums up to 722function addSum(array) { // call the function with your array parameter
let solution = 0
for (let x = 0 ; x < array.length;x++) { // for loop
solution = solution + array[x]
}
return solution
}