js 对象数组深拷贝
参考 https://www.cnblogs.com/xjnotxj/p/9810534.html
const _ = require('lodash'); let one_brand = [ {name: 'A', count: 1, value: Infinity}, {name: 'B', count: 2}, ] // 深拷贝 // 方法一 let two_brand = one_brand.map(o => Object.assign({}, o)); // 方法二 let two_brand = one_brand.map(o => ({...o})); // 方法三(推荐) let two_brand = _.cloneDeep(one_brand); console.log("改变前:") console.log(one_brand) console.log(two_brand) two_brand[1].count = 0; console.log("改变后:") console.log(one_brand) console.log(two_brand)