我想以递归方式从其自己的组件中添加react组件。我看到了这个tree component的例子,它通过子TreeNodes进行映射并以相同的方式添加子节点。不幸的是,它对我来说根本不起作用。我们的想法是拥有一个简单的注释组件,并且回复将重用相同的组件。
var Comment = React.createClass({
render: function() {
return (
<div className="comment">
{/* text and author */}
<div className="comment-text">
<span className="author">{this.props.author}</span>
<span className="body" dangerouslySetInnerHTML={{__html: this.props.body}} />
</div>
{/* replies */}
<div className="replies">
{
this.props.replies.map(function(reply) {
<Comment body={reply.body} author={reply.author} />
}.bind(this))
}
</div>
</div>
);
}
});
我收到以下错误消息:
未捕获的TypeError:无法构建&#39;评论&#39;:请使用&#39; new&#39;运算符,此DOM对象构造函数不能作为函数调用。
这是传递给组件的JSON数据的示例。
{ "author" : "Some user",
"body" : "<div>Great work</div>",
"replies" : [ { "author" : "A user replying",
"body" : "<div Yes it was great work</div>"
},
{ "author" : "Another user replying",
"body" : "<div It really was great work!</div>"
}
]
}
答案 0 :(得分:34)
这是ES6中的另一种选择:
import React, { Component, PropTypes } from 'react'
export default class Comments extends Component {
render() {
const { children } = this.props
return (
<div className="comments">
{children.map(comment =>
<div key={comment.id} className="comment">
<span>{comment.content}</span>
{comment.children && <Comments children={comment.children}/>}
</div>
)}
</div>
)
}
}
Comments.propTypes = {
children: PropTypes.array.isRequired
}
还有其他一些组成部分:
<Comments children={post.comments}/>
答案 1 :(得分:14)
如果我在渲染方法的顶部创建子节点作为对象,它可以正常工作。
export default class extends React.Component {
let replies = null
if(this.props.replies){
replies = this.props.replies.map((reply) => {
return (
<Comment author={reply.author} body={reply.body} />
)
})
}
render() {
return (
<div className="comment">
<div className="replies">{ replies }</div>
</div>
)
}
}
答案 2 :(得分:1)
最简单的方法是在类中创建一个返回类实例的函数:
<强> RecursiveComponent.rt.js:强>
<div>
...
<div rt-repeat="recursiveChild in this.props.recursiveItem.recursiveChilds">
{this.renderRecursive(recursiveChild)}
</div>
</div>
如果您使用react-templates library:
<强> RecursiveComponent.rt:强>
$('.slidetpl img[src=""]').hide();