Javascript ReactDOM 应该从哪里导入?
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Where should ReactDOM be imported from?
提问by Sergei Basharov
After upgrading to version 0.14.2
, I see an error and recommendation to use ReactDOM.render()
instead of React.render()
, but whence do I import it?
升级到 version 后0.14.2
,我看到一个错误和建议使用ReactDOM.render()
而不是React.render()
,但是我从哪里导入它?
When I don't import it and just running as it is, it shows it as undefined
. Is it a built-in functionality or is it a 3rd party library?
当我不导入它并按原样运行时,它显示为undefined
. 它是内置功能还是第三方库?
回答by saadq
With the new update, all the DOM stuff you do should be done with ReactDOM
instead of React
. It's a separate module.
随着新的更新,你做的所有东西DOM应该做ReactDOM
的,而不是React
。这是一个单独的模块。
Do npm install react-dom
and then, if you're using ES6, you can do:
这样做npm install react-dom
,然后,如果你使用ES6,你可以这样做:
import ReactDOM from 'react-dom';
or if you're using ES5 you can just do:
或者,如果您使用的是 ES5,则可以执行以下操作:
var ReactDOM = require('react-dom');
and then you can use ReactDOM.render()
, ReactDOM.findDOMNode()
, etc in your code.
然后你可以用ReactDOM.render()
,ReactDOM.findDOMNode()
等你的代码。