js里修改数组或对象的键名

最新推荐文章于 2025-06-27 19:40:27 发布

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最新推荐文章于 2025-06-27 19:40:27 发布

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版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。

本文链接：https://blog.youkuaiyun.com/weixin_42776027/article/details/86519679

本文介绍了一种在JavaScript中更新对象属性并将其从原始键名迁移到新键名的方法。通过实例演示了如何复制对象的旧值到新键，并删除旧键，确保数据结构的更新不会丢失原有数据。

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参考百度某大神

var key = 'abc';

var obj = {key : '值'};

// 复制原来的值

obj[key] = obj['key'];

// 删除原来的键

delete obj['key'];

// 检查效果

alert(obj.abc);

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