javascript - 如何获得此 react ajax响应并设置状态

Question

class Videos extends React.Component{
    constructor(){
        super();
        videoslist:[];
    }


    _getVideo(skip,limit){

        var self= this;    
        var sess=localStorage.getItem("sessionId");

        $.ajax({
            method:'GET',
            url:'videos',
            data:{'sessionId':sess,
                 'skip':skip,
                 'limit':limit},
            success:function(res){
               this.setState({videoslist:res.data})
            }.bind(this)
        });       
   }
 componentWillMount(){
       this._getVideo(0,10);
   } 

未捕获的类型错误:无法读取 null 的属性“videoslist” 未捕获的类型错误:无法读取 null 的属性“_currentElement”

Answer 1

你的状态初始化有误

constructor(){
    super();
    this.state = {
        videoslist: []
    }
}