angular8

问题 Request to upload file: // upload file to the pre-signed url const httpOptions = { headers: new HttpHeaders({ 'Content-Disposition': 'attachment;filename=' + file.name + '', observe: 'response' }) }; this.httpClient.put(preSingedUrl, file, httpOptions) .subscribe((response: HttpResponse<any>) => { console.log(response); // it's returning null }); response is always getting null, but in the network tab status is 200 OK. access-control-allow-methods: GET, POST, OPTIONS access-control-allow

问题 I have a CORS problem in my project. From Angular 8 I do: httpOptions = { headers: new HttpHeaders({ 'Content-Type':'application/json', 'Authorization':'Basic bm92Z*********************' }) }; and I do get operation in this way: public getStudents() : Observable<IStudent[]>{ return this.http.get<IStudent[]>(this.writeUrl, this.httpOptions)...// this.writeUrl is the request url } In my server with java I do: public void filter(ContainerRequestContext requestContext, ContainerResponseContext

问题 I try to implement this behavior http://jsfiddle.net/Aneeshmohan/qbxfbmtt/ in angular 8. I use angular cdk drag-drop module https://stackblitz.com/edit/angular-4ppaey?file=src%2Fapp%2Fapp.module.ts but I have some problems: $('.dragger').draggable({ revert: "invalid", helper: function () { //Code here return $("<div class='dragger'></div>").append("Hi"); } }); $(".dropper").droppable({ drop: function (event, ui) { $(this) .addClass("ui-state-highlight") .find("p") .html("Dropped!"); var

问题 Here's the problem. I have three states of almost all the pages in my app. 1. Loading (where I want to show spinner within the page and for that I have created a component already) 2. No Records Found ( An image in center of the page and I have a component for this as well ) 3. Data loading and my actual content without any wrapper around that which can mess up the design. Thats how I am doing this currently which doesnt look great on every page. <app-spinner *ngIf="!data; else page_content">

问题 Here's the problem. I have three states of almost all the pages in my app. 1. Loading (where I want to show spinner within the page and for that I have created a component already) 2. No Records Found ( An image in center of the page and I have a component for this as well ) 3. Data loading and my actual content without any wrapper around that which can mess up the design. Thats how I am doing this currently which doesnt look great on every page. <app-spinner *ngIf="!data; else page_content">

问题 I am trying to load modules dynamically with systemjs version 6.x in my Angular 8 application. Given there current documentation it looks like I can either user the SystemJS API to register or set a module programatically. https://github.com/systemjs/systemjs/blob/master/docs/api.md#systemsetid-module---module Trying this, however it doesn't look like systemjs is finding @angular/core import * as angularCore from '@angular/core'; System.set('@angular/core', angularCore); Should I be using set

问题 I created an API in laravel and tested in postman and it is working perfect. But when I try it from angular it works fine for returning a string text but not for JSON response I searched it on internet and found setting content-type:application/json and tried with different ways for setting content type in header but issue still persist var obj = JSON.parse('{"email":"ab@gm.com","password":"12345678"}'); //1st type of header var headers_object = new HttpHeaders().set('Content-Type',

问题 I am working on an angular application and I am using mat form fields in it. For changing color of botttom border of mat form field I am using mat-form-field-ripple css which is inbuilt for mat form field. CSS is as follows. .mat-form-field-ripple { background-color: #f9c940!important; } When I use this CSS, it automatically gets applied to all form fields. I have to apply #f9c940 color in mat-form-filed-ripple in when one condition is true and a different color when another condition is true

问题 I started a project with Angular 8 Metronic. I have a component with a form. I want spinner appears on submit click and disappear on API response. Here is a part of the component code : @Component({ selector: 'change-password', templateUrl: './change-password.component.html', styleUrls: ['./change-password.component.scss'], }) export class ChangePasswordComponent implements OnInit, OnDestroy { isLoading: boolean = false; ... submit() { this.isLoading = true; this.utilisateurService

问题 You are running version v8.15.1 of Node.js, which is not supported by Angular CLI 8.0+. The official Node.js version that is supported is 10.9 or greater. Please visit https://nodejs.org/en/ to find instructions on how to update Node.js. npm ERR! code ELIFECYCLE npm ERR! errno 3 While running the the angular 8 application i am facing an issue and the build log shows like this . Thanks 来源： https://stackoverflow.com/questions/61949560/how-to-update-the-node-verison-in-the-build-server-in