JavaScript object.freeze 的相关内容

文章 2024-10-22 来自：开发者社区

在JavaScript中，Object.assign()方法或展开语法（...）来合并对象，Object.freeze()方法来冻结对象，防止对象被修改

一、Object.freeze()方法来冻结对象，防止对象被修改 Object.freeze() 是JavaScript中的一个方法，用于冻结一个对象。被冻结的对象不能再被修改。具体来说，它做了两件事情：防止添加新的属性：尝试添加新属性将失败，不会抛出错误，但新属性不会被添加到对象中。防止删除属性：尝试删除对象的任何属性都将失败，不会抛出错误。但请注意，它不...

文章 2022-06-30 来自：开发者社区

JavaScript 中对象处理之 Object.freeze 与 Object.seal

数据不变性在编程语言中一直非常重要，在 JavaScript 中也是如此。在这里，有两种 JavaScript 方法可以部分保证不变性：Object.freeze 和 Object.seal。本文来总结一下这两个方法都可以用来做什么？都有什么区别？存在什么不足之处？Object defineProperty在了解 freeze 和 seal 之前，先来了解一下 Object 中的 defineP....

文章 2022-05-09 来自：开发者社区

如何在Javascript中使用Object.freeze()

Object.freeze()Object.freeze() 方法可以冻结一个对象。一个被冻结的对象再也不能被修改；冻结了一个对象则不能向这个对象添加新的属性，不能删除已有属性，不能修改该对象已有属性的可枚举性、可配置性、可写性，以及不能修改已有属性的值。此外，冻结一个对象后该对象的原型也不能被修改。freeze() 返回和传入的参数相同的对象用法const objectExample = { ....

共有3条

< 1 >

跳转至： GO

更新时间 2024-10-23 08:51:18

本页面内关键词为智能算法引擎基于机器学习所生成，如有任何问题，可在页面下方点击"联系我们"与我们沟通。

JavaScript您可能感兴趣

产品推荐

{"optioninfo":{"dynamic":"ture","static":"true"},"simplifiedDisplay":"newEdition","newCard":[{"iconImg":"https://img.alicdn.com/tfs/TB1JWN9qggP7K4jSZFqXXamhVXa-200-200.png","ifIcon":"img","link":"https://img.alicdn.com/tfs/TB1XY8hGYr1gK0jSZFDXXb9yVXa-1740-328.png","title":"Node.js 性能平台","des":"Node.js 性能平台（Node.js Performance Platform）是面向中大型 Node.js 应用提供 性能监控、安全提醒、故障排查、性能优化等服务的整体性解决方案。提供完善的工具链和服务，协助客户主动、快速发现和定位线上问题。","btn1":"申请开通","link1":"https://common-buy.aliyun.com/?spm=5176.179584.935956.btn1.6bd0276eYr3tGs&commodityCode=npp#/open","contentLink":"https://www.aliyun.com/product/nodejs","btn2":"产品文档","link2":"https://help.aliyun.com/product/60298.html?spm=5176.179584.935956.btn2.6bd0276eYr3tGs","infoGroup":[{"infoName":"入门指导","infoContent":{"firstContentName":"产品快速入门","firstContentLink":"https://help.aliyun.com/knowledge_detail/60338.html?spm=5176.179584.935963.2.6bd0276eYr3tGs","lastContentName":"常见问题","lastContentLink":"https://help.aliyun.com/knowledge_detail/60418.html?spm=5176.179584.935963.3.6bd0276eYr3tGs"}},{"infoName":"最佳实践","infoContent":{"firstContentName":"内存泄露案例","firstContentLink":"https://help.aliyun.com/document_detail/64011.html?spm=a2c4g.11174283.6.570.159030b1bBdKke"}},{"infoName":"产品动态","infoContent":{"firstContentName":"产品最新动态","firstContentLink":"https://www.aliyun.com/product/news?spm=5176.179584.1266814.211view.6bd0276eYr3tGs&category=233&product=261"}}],"btn3":""}],"card":[],"search":[],"infoCard":[],"title":{"mainTitle":"mPaaS","subtitle":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","linkUrl":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","btnText":"查看详情"},"visual":{"topbg":"https://img.alicdn.com/tfs/TB1bQuBIYH1gK0jSZFwXXc7aXXa-3840-740.gif","icon":"","textColor":"dark"},"dataList":[{"summary":"啦啦啦","author":"wuwu","linksUrl":"#"}],"sceneCard":[],"txt":[]}

{"$env":{"JSON":{}},"$page":{"env":"production"},"$context":{"optioninfo":{"dynamic":"ture","static":"true"},"simplifiedDisplay":"newEdition","newCard":[{"iconImg":"https://img.alicdn.com/tfs/TB1JWN9qggP7K4jSZFqXXamhVXa-200-200.png","ifIcon":"img","link":"https://img.alicdn.com/tfs/TB1XY8hGYr1gK0jSZFDXXb9yVXa-1740-328.png","title":"Node.js 性能平台","des":"Node.js 性能平台（Node.js Performance Platform）是面向中大型 Node.js 应用提供 性能监控、安全提醒、故障排查、性能优化等服务的整体性解决方案。提供完善的工具链和服务，协助客户主动、快速发现和定位线上问题。","btn1":"申请开通","link1":"https://common-buy.aliyun.com/?spm=5176.179584.935956.btn1.6bd0276eYr3tGs&commodityCode=npp#/open","contentLink":"https://www.aliyun.com/product/nodejs","btn2":"产品文档","link2":"https://help.aliyun.com/product/60298.html?spm=5176.179584.935956.btn2.6bd0276eYr3tGs","infoGroup":[{"infoName":"入门指导","infoContent":{"firstContentName":"产品快速入门","firstContentLink":"https://help.aliyun.com/knowledge_detail/60338.html?spm=5176.179584.935963.2.6bd0276eYr3tGs","lastContentName":"常见问题","lastContentLink":"https://help.aliyun.com/knowledge_detail/60418.html?spm=5176.179584.935963.3.6bd0276eYr3tGs"}},{"infoName":"最佳实践","infoContent":{"firstContentName":"内存泄露案例","firstContentLink":"https://help.aliyun.com/document_detail/64011.html?spm=a2c4g.11174283.6.570.159030b1bBdKke"}},{"infoName":"产品动态","infoContent":{"firstContentName":"产品最新动态","firstContentLink":"https://www.aliyun.com/product/news?spm=5176.179584.1266814.211view.6bd0276eYr3tGs&category=233&product=261"}}],"btn3":""}],"card":[],"search":[],"infoCard":[],"title":{"mainTitle":"mPaaS","subtitle":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","linkUrl":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","btnText":"查看详情"},"visual":{"topbg":"https://img.alicdn.com/tfs/TB1bQuBIYH1gK0jSZFwXXc7aXXa-3840-740.gif","icon":"","textColor":"dark"},"dataList":[{"summary":"啦啦啦","author":"wuwu","linksUrl":"#"}],"sceneCard":[],"txt":[]}}