React-从DOM元素获取组件进行调试

安装React devtools并使用以下命令访问相应dom节点的反应元素（$ 0）。

为0.14.8

    var findReactNode = (node) =>Object.values(__REACT_DEVTOOLS_GLOBAL_HOOK__.helpers)[0]
.getReactElementFromNative(node)
._currentElement;
       findReactNode($0);

当然，它只是一个hack。

我刚刚阅读了文档，并且afaik没有一个外部公开的API可以让您直接进入并通过ID查找React组件。但是，您可以更新初始React.render()调用并将返回值保留在某个位置，例如：

window.searchRoot = React.render(React.createElement......

You can then reference searchRoot, and look through that directly, or traverse it using the React.addons.TestUtils. e.g. this will give you all the components:

var componentsArray = React.addons.TestUtils.findAllInRenderedTree(window.searchRoot, function() { return true; });

There are several built-in methods for filtering this tree, or you can write your own function to only return components based on some check you write.

More about TestUtils here: https://facebook.github.io/react/docs/test-utils.html