原数组:
var arr = [ { time: 1, title: '2' }, { time: 1, title: '2' }, { time: 2, title: '1' } ]
最终数组:
let arrResult = [ { time: 1, number: 2, title: "2 2" }, { time: 2, number: 1, title: "1"} ]
实现代码:
let arrResult = [] arr1 = arr.forEach(item => { let flag = arrResult.find(item1 => item1.time === item.time) if (!flag) { arrResult.push({ time: item.time, number: 1, title: item.title, }) } else { flag.number++ flag.title = `${flag.title} ${item.title}` } }) console.log(arrResult)