角：追加查詢參數以此來URL

Question

林：

import { HttpParams } from '@angular/common/http'; 
let params = new HttpParams(); 
    params.append('newOrdNum','123'); 

但是這不工作，我不URL中添加PARAM。任何建議？

Answer 1

這可以通過使用Router類歸檔：

使用組件：

import { Router, ActivatedRoute } from '@angular/router'; 

@Component({}) 
export class FooComponent { 
    constructor(
    private _route: ActivatedRoute, 
    private _router: Router 
    ){} 

    navigateToFoo(){ 
    // changes the route without moving from the current view or 
    // triggering a navigation event 
    this._router.navigate([], { 
     relativeTo: this._route 
     queryParams: { 
     newOrdNum: '123' 
     }, 
     queryParamsHandling: 'merge', 
     // preserve the existing query params in the route 
     skipLocationChange: true 
     // do not trigger navigation 
    }); 
    } 
} 

欲瞭解更多信息檢查this book和角Router API

Answer 2

您應該使用Router模塊。檢查這個文檔：https://angular.io/guide/router

您需要導入這些模塊： import { Router, ActivatedRoute, ParamMap } from '@angular/router';