//原数据
let oldArr = [{faqId: 1, faqName: null}, {faqId: 2, faqName: null}, {faqId: 3, faqName: null}, {faqId: 4, faqName: null},{faqId: 5, faqName: null}]
//新增删除过的数据的数据
let newArr =[{faqId: 2, faqName: null},{faqId: 4, faqName: null},{faqId: 6, faqName: null},{faqId: 8, faqName: null}]
let NewIdArr = newArr.map((e) => e.faqId);
let oldIdArr = oldArr.map((e) => e.faqId);
let addIdArr = NewIdArr.filter((i) => {
return oldIdArr.indexOf(i) === -1;
}); //最后添加的数据faqId
let delIdArr = oldIdArr.filter((i) => {
return NewIdArr.indexOf(i) === -1;
}); //最后删除的数据faqId
let addFaqList = [];
//根据id返回添加的数组对象,删除同理
this.rowSelection.selectedRows.forEach((e) => {
addIdArr.forEach((ele) => {
if (e.faqId === ele) {
addFaqList.push(e);
}
});
});
当然了这是手写的方法,loadsh里面有相关的方法,可以去看看