Javascript 类型错误：Object.entries 不是函数
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/43858714/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
TypeError: Object.entries is not a function
提问by
Why do I keep getting this error when trying to run my Node.js/Express server?
为什么我在尝试运行我的 Node.js/Express 服务器时总是收到这个错误？
Is this a part of the newer ES7? What do I need to be able to run an app using these new features?
这是新 ES7 的一部分吗？我需要什么才能使用这些新功能运行应用程序？
回答by derp
According to http://kangax.github.io/compat-table/es2016plus/under the Object static methods, it seems you need to enable the harmony flag
根据http://kangax.github.io/compat-table/es2016plus/下的Object静态方法，看来你需要启用和谐标志
So run node like this
所以像这样运行节点
node --harmony script.js
回答by peja
On mdn docs, there is a clear tutorial on Object.entries, and it is described what to be done if Object.entries is not supported on part PolyFillin the same page.
在 mdn 文档上，有一个关于Object.entries的清晰教程，并且描述了如果同一页面中的部分PolyFill不支持 Object.entries 时该怎么做。
To add compatible Object.entries support in older environments that do not natively support it, you can find a demonstrational implementation of Object.entries in the tc39/proposal-object-values-entries (if you don't need any support for IE), a polyfill in the es-shims/Object.entries repositories, or you can use the simple, ready to deploy polyfill listed below.
if (!Object.entries) Object.entries = function( obj ){ var ownProps = Object.keys( obj ), i = ownProps.length, resArray = new Array(i); // preallocate the Array while (i--) resArray[i] = [ownProps[i], obj[ownProps[i]]]; return resArray; };
要在本机不支持的旧环境中添加兼容的 Object.entries 支持，您可以在 tc39/proposal-object-values-entries 中找到 Object.entries 的演示实现（如果您不需要对 IE 的任何支持） , es-shims/Object.entries 存储库中的 polyfill，或者您可以使用下面列出的简单的、准备部署的 polyfill。
if (!Object.entries) Object.entries = function( obj ){ var ownProps = Object.keys( obj ), i = ownProps.length, resArray = new Array(i); // preallocate the Array while (i--) resArray[i] = [ownProps[i], obj[ownProps[i]]]; return resArray; };
回答by deepak prakash
you could use babel-polyfillfor quick solution
您可以babel-polyfill用于快速解决方案
npm install babel-polyfill
import 'babel-polyfill';
回答by Snekse
In case this helps someone else...
万一这对其他人有帮助...
Update your version of Node. I was running node 6.x and this issue resolved itself after I updated to node 8.x+
更新您的 Node.js 版本。我正在运行节点 6.x，更新到节点 8.x+ 后，此问题自行解决
回答by lwz7512
First install react-app-polyfill:
首先安装 react-app-polyfill：
npm install react-app-polyfill
Then import to the top of your index.jsx before import React:
然后在导入 React 之前导入到 index.jsx 的顶部：
import 'react-app-polyfill/stable';
