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<title>JS深拷贝的几种方法</title>
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<script src="https://cdn.jsdelivr.net/npm/[email protected]/lodash.min.js"></script>
<script>
let origin = ['李白','赵云','王昭君','裴擒虎','元歌']
/**
* 1. Object.assign() 实现深拷贝 --- 个人常用
*/
// let target = Object.assign([],origin)
/**
* 2. JSON.parse() 和 JSON.stringify() 实现深拷贝
*/
// let target = JSON.parse(JSON.stringify(origin))
/**
* 3. lodash 里面的 cloneDeep() 方法 实现深拷贝
* vue 中使用 ：
* a. npm i --save lodash 下载依赖
* b. import _ from 'lodash' 在 组件 中引入
* c. 用法和下面的一样
*/
let target = _.cloneDeep(origin)
target.pop() // 修改 target 数组后
console.log('origin',origin) // origin ["李白", "赵云", "王昭君", "裴擒虎"]
console.log('target',target) // target ["李白", "赵云", "王昭君", "裴擒虎", "元歌"]
</script>
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Several common methods for implementing deep copy in JS
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Origin blog.csdn.net/m0_49045925/article/details/116257464
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