Javascript 角度:无法读取属性';在';未定义的
我试图在我的Angular应用程序中使用WebSocket和数据表组件 每次添加时,我都会运行Javascript 角度:无法读取属性';在';未定义的,javascript,angular,datatable,angular-material,Javascript,Angular,Datatable,Angular Material,我试图在我的Angular应用程序中使用WebSocket和数据表组件 每次添加时,我都会运行conect()函数来更新客户端的内容 import * as io from "socket.io-client"; @Component({ selector: "app-liste-projets", templateUrl: "./liste-projets.component.html", styleUrls: ["./liste-projets.component.css"]
conect()
函数来更新客户端的内容
import * as io from "socket.io-client";
@Component({
selector: "app-liste-projets",
templateUrl: "./liste-projets.component.html",
styleUrls: ["./liste-projets.component.css"]
})
export class ListeProjetsComponent implements OnInit {
constructor(private ajoutProj: AjoutprojService) {}
...
}
export class UserDataSource extends DataSource<any> {
constructor(private ajoutProj: AjoutprojService) {
super();
}
socket = io('http://127.0.0.1:8080');
connect():Observable<NouveauProjet[]> {
var data= this.ajoutProj.getAllProj();
return data;
}
this.socket.on("add", ()=>{
this.connect() })
}
试试这个
export class UserDataSource extends DataSource<any> {
private socket: SocketIOClient.Socket;
constructor(private ajoutProj: AjoutprojService) {
super();
}
connect():Observable<NouveauProjet[]> {
this.socket = io.connect('http://127.0.0.1:8080')
this.socket.on('connect', () => {
console.log('WidgetSocket: Opened a new socket connection', this.socket.id);
});
var data= this.ajoutProj.getAllProj();
return data;
}
}
导出类UserDataSource扩展了DataSource{
私有套接字:SocketIOClient.socket;
构造函数(私有AjoupProj:AjoupProJService){
超级();
}
connect():可观察{
this.socket=io.connect('http://127.0.0.1:8080')
this.socket.on('connect',()=>{
log('WidgetSocket:Opened a new socket connection',this.socket.id);
});
var data=this.ajoupproj.getAllProj();
返回数据;
}
}
试试这个
export class UserDataSource extends DataSource<any> {
private socket: SocketIOClient.Socket;
constructor(private ajoutProj: AjoutprojService) {
super();
}
connect():Observable<NouveauProjet[]> {
this.socket = io.connect('http://127.0.0.1:8080')
this.socket.on('connect', () => {
console.log('WidgetSocket: Opened a new socket connection', this.socket.id);
});
var data= this.ajoutProj.getAllProj();
return data;
}
}
导出类UserDataSource扩展了DataSource{
私有套接字:SocketIOClient.socket;
构造函数(私有AjoupProj:AjoupProJService){
超级();
}
connect():可观察{
this.socket=io.connect('http://127.0.0.1:8080')
this.socket.on('connect',()=>{
log('WidgetSocket:Opened a new socket connection',this.socket.id);
});
var data=this.ajoupproj.getAllProj();
返回数据;
}
}
我收到此错误
找不到命名空间“SocketIOClient”
我收到此错误找不到命名空间“SocketIOClient”