如何在angular2的另一个组件中显示功能中的数据？

Question

I've got a component dataservice.ts with a function() that will provide a string by:

    httpString: string = "https://";
    complUrl: string = "";
    something: string = "something";
    something: string = ".something";

    constructor(private http: Http) {

    }

    buildUrl(): void {
        let pId = "015111810666";
        let dId = "i21wcwg2hssv2t9";         

        this.complUrl = this.httpString + this.something + this.something + pId + dId;
        console.log(complUrl);
    }

and i want to query complUrl in another component - myComponent.ts - by OnInit

constructor(private myDataService: MyDataService) {
}  
ngOnInit() { 
 this.myDataService.buildUrl();  
}

what am i doing wrong? i guess it's simple, but i can't figure it out.

Answer 1

You are missing this in your console.log, which causes your error message: complUrl is not defined , so it should be:

console.log(this.complUrl);

And just as a comment, you have replaced "real" variables with something , right? Otherwise you have two identical variables.