// 上一次的数据,旧数组
var oldArray = [
{ id: '1', name: 'zhangsan', age: '15' },
{ id: '2', name: 'lisi', age: '16' },
{ id: '3', name: 'ani', age: '17' },
]
// 刚刚返回的新数组
var newArray = [
{ id: '1', name: 'zhangsan', age: '100' },
{ id: '2', name: 'lisi' },
]
// 将旧数组过滤出符合条件的数据id集合
const idsArray = oldArray.filter((item) => {
return item.id !== '1'
}).map((item) => {
return item.id
});
console.log(idsArray, 'idsArray');
// ['2', '3'] 'idsArray'
const productList = newArray.filter((item) => {
return idsArray.includes(item.id)
})
console.log(productList, 'productList')
// [{id: '2', name: 'lisi'}] 'productList'
js新旧对象数组对比,如果两个数组有相等的值id,则把新数组对应的id的某一项过滤出来
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