React:如何在页面中两次渲染组件? [英] React: How to render a component twice in a page?

问题描述

我在 React 中有一个组件构建myComponent.js

I have a component build in ReactmyComponent.js

ReactDOM.render(
  <MyComponent />,
  document.getElementById('my-id')
);

在我的 Html 中，我想渲染两次，HTML 如下:

In my Html, I want to render it twice, the HTML is as following:

<div id='my-id></div>
some html
<div id='my-id></div>

我想在这个页面中反应渲染两次，但它只为第二个 div 渲染一次.反正有没有渲染两次?

I want react render twice in this page, but it only render once for the second div. Is there anyway to render it twice?

推荐答案

HTML 中的两个或多个元素不能有相同的 id.使用不同的ids

You can't have the same id for two or more elements in HTML. Use different ids

<div id='my-id-one></div>
some html
<div id='my-id-two></div>

并为每个 id 分别调用 ReactDOM.render.

and call the ReactDOM.render separately for each id.

ReactDOM.render(
  <MyComponent />,
  document.getElementById('my-id-one')
);

ReactDOM.render(
  <MyComponent />,
  document.getElementById('my-id-two')
);

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