let data = {}
let arr = [
{ width: 155 }, { width: 180 }, { width: 180 }, { width: 240 },
{ width: 130 }, { width: 280 }, { width: 100 }, { width: 50 }
]
for (let j = 0; j < arr.length; j++) {
if (j >= 1) {
console.log(j - 1, j)
data[j] = arr[j] = [j - 1].with + arr[j] = [j].with
}
}
如何做到
data { 0: arr[0] + arr[1], 1: arr[0] + arr[1] + arr[2], 2: arr[0] + arr[1] + arr[2] + arr[3]
......
}
js 數組中挨個數字相加如何做？
皈依舞
2018-09-24 17:35:16
