//对象数组
let items=[{
checked: true,
expand: false,
id: "193015444658065408",
indeterminate: false,
linkUrl: "45",
nodeKey: 1,
title: "98",
type: "section"
},{
checked: true,
expand: false,
id: "193015444658065409",
indeterminate: false,
linkUrl: "23",
nodeKey: 1,
title: "98",
type: "section"
},{
checked: true,
expand: false,
id: "193015444658065400",
indeterminate: false,
linkUrl: "67",
nodeKey: 1,
title: "98",
type: "section"
}];
let newItems = [];
//通过时间戳获取唯一标识
let guidId = Date.parse(new Date());
items.map((item, index) => {
guidId++;
//Object.assign是ES6中对象属性复制方法
newItems.push(Object.assign({}, item, { guidId: guidId }));
});