React.render 替换容器而不是插入 [英] React.render replace container instead of inserting into

问题描述

我正在逐渐用 React 替换一些 Backbone 视图.

我的反应视图:

由 React 渲染

我需要在其他 html 元素下方呈现 React 视图而不替换它们.

<div id="anotherView">其他不可删除的内容</div><div id="placeholderForReactView"></div>

我希望我的方法可以替换占位符而不是插入到其中:

React.render(React.createElement(MyTestReactView), document.getElementById('placeholderForReactView'));

可能导致:

<div>其他不可删除的内容</div><div id="reactViewContent">由 React 渲染</div>

代替:

<div>其他不能删除的东西</div><div id="placeholderForReactView"><div id="reactViewContent">由 React 渲染</div>

在不重复使用 Jquery 的情况下，有没有正确的方法来做到这一点?

解决方案

你不需要 jQuery 来解决这个问题.

您只需要渲染到一个临时 DIV 中并提取内容并替换现有元素.我添加了 id="destination" 以便可以轻松地从临时元素中检索元素.

var Hello = React.createClass({渲染:函数(){return <div id="destination">你好{this.props.name}</div>;}});//临时渲染目标var temp = document.createElement("div");//使成为React.render(<Hello name="World"/>, temp);//抓取容器var container = document.getElementById("container");//并替换孩子container.replaceChild(temp.querySelector("#destination"), document.getElementById("destination"));

I'm gradually replacing some Backbone views with React.

My React View:

<div id="reactViewContent">Rendered By React</div>

I need to render the React view below other html elements without replacing them.

<div id="somestuff">
  <div id="anotherView">Other stuff not to delete</div>
  <div id="placeholderForReactView"></div>
</div>

I'd like that my method could replace the placeholder instead of inserting into it so that :

React.render(React.createElement(MyTestReactView), document.getElementById('placeholderForReactView'));

could result in:

<div id="somestuff">
  <div>Other stuff not to delete</div>
  <div id="reactViewContent">Rendered By React</div>
</div>

instead of:

<div id="somestuff">
  <div>Other stuff not to delete</div>
  <div id="placeholderForReactView">
    <div id="reactViewContent">Rendered By React</div>
  </div>
</div>

Without recurring at Jquery is there a correct way to do it?

解决方案

You don't need jQuery to work around this issue.

You just need to render into a temporary DIV and extract the content and replace the existing element. I've added the id="destination" so that the element can be easily retrieved from the temporary element.

var Hello = React.createClass({
    render: function() {
        return <div id="destination">Hello {this.props.name}</div>;
    }
});

// temporary render target
var temp = document.createElement("div");
// render
React.render(<Hello name="World" />, temp);
// grab the container
var container = document.getElementById("container");
// and replace the child
container.replaceChild(temp.querySelector("#destination"), document.getElementById("destination"));

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