一、数组合并去重
例：let arr1 = [1, 2,3, 4, 5, 7]
let arr2 = [1, 3, 5, 7,8, 10]
let arr = arr1.concat(arr2) -> 合并数组
let newArr = [...new Set(arr)] ------ 或者：let newArr = new Set(arr) Array.form(newArr)
console.log(newArr) // [1, 2, 3, 4, 5, 7, 8, 10]
二、数组对象合并去重
例： let arr1 = [{'id': '111', name: 'xc'}, {'id': '222', name: 'bb'}]
let arr2 = [{'id': '111', name: 'xc'}, {'id': '333', name: 'hh'}]
let newArr = arr1.concat(arr2)
let list = []
for (let item1 of newArr) {
let flag = true
for (let item2 of list) {
if (item1.id == item2.id) {
flag = false
}
}
if (flag) { list.push(item1) }
}
console.log(list) //[{'id': '111', name: 'xc'}, {'id': '222', name: 'bb'}, {'id': '333', name: 'hh'}]