如何使用 `React.createElement` 子参数(不带 jsx) [英] How to use `React.createElement` children parameter (without jsx)

问题描述

React.createElement 接受一个扩展的children"参数

React.createElement takes a spread "children" parameter

var d = React.DOM;

React.createElement(LabeledElement, {label: "Foo"}, 
     d.input({value: "foo"})
)

但我找不到任何关于如何实际使用它的文档

but I can't find any documentation on how to actually use it

var LabeledElement = React.createClass({
    render: function() {
        return d.label({}
            ,d.span({classNames: 'label'}, this.props.label)
            , //How to place children here? 
    }
})

我相信这有一个非常简单的答案.

I'm sure this has a really really simple answer.

推荐答案

通过 JSX 嵌套或通过 React.createElement 的第三个+ 参数传递给组件的子组件在组件中显示为 this.props.children:

The children passed to a component, either via JSX nesting or via the third+ argument to React.createElement, shows up in the component as this.props.children:

var MyLabel = React.createClass({
  render: function() {
    return React.createElement("label", {className: "label"},
      React.createElement("span", {className: "label"}, this.props.label),
      this.props.children
    );
  }
});

var App = React.createClass({
  render: function() {
    return React.createElement(MyLabel, {label: "Here is the label prop"},
      React.createElement("div", {},
        React.createElement("input", {type: "text", value: "And here is a child"})
      )
    );
  }
});

示例:http://jsfiddle.net/BinaryMuse/typ1f2mf/；文档:http://facebook.github.io/react/docs/multiple-components.html#孩子

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