在我组件的渲染函数中，我有:
render() {
const items = ['EN', 'IT', 'FR', 'GR', 'RU'].map((item) => {
return (<li onClick={this.onItemClick.bind(this, item)} key={item}>{item}</li>);
});
return (
<div>
...
<ul>
{items}
</ul>
...
</div>
);
}
一切呈现良好，但当点击<li>元素时，我收到以下错误:
Uncaught Error: Invariant Violation: Objects are not valid as a React child (found: object with keys {dispatchConfig, dispatchMarker, nativeEvent, target, currentTarget, type, eventPhase, bubbles, cancelable, timeStamp, defaultPrevented, isTrusted, view, detail, screenX, screenY, clientX, clientY, ctrlKey, shiftKey, altKey, metaKey, getModifierState, button, buttons, relatedTarget, pageX, pageY, isDefaultPrevented, isPropagationStopped, _dispatchListeners, _dispatchIDs}). If you meant to render a collection of children, use an array instead or wrap the object using createFragment(object) from the React add-ons. Check the render method of Welcome.
如果我改成this。onitemclick。绑定(this, item) to (e) => onItemClick(e, item)内的映射函数，一切都按预期工作。
如果有人能解释我做错了什么，为什么我会得到这个错误，那就太好了
更新1: onItemClick函数如下所示。setState会导致错误消失。
onItemClick(e, item) {
this.setState({
lang: item,
});
}
但是我不能删除这一行，因为我需要更新这个组件的状态
