angular6

问题 I'm trying to learn how to make plugins work in Angular, however after adding systemjs I get the following error: Uncaught ReferenceError: SystemJS is not defined I implemented systemjs like this: import { System } from 'systemjs'; declare const SystemJS: System; import * as angularCore from '@angular/core'; import * as angularCommon from '@angular/common'; import * as angularCommonHttp from '@angular/common/http'; import * as angularForms from '@angular/forms'; import * as angularAnimations

问题 I'm trying to learn how to make plugins work in Angular, however after adding systemjs I get the following error: Uncaught ReferenceError: SystemJS is not defined I implemented systemjs like this: import { System } from 'systemjs'; declare const SystemJS: System; import * as angularCore from '@angular/core'; import * as angularCommon from '@angular/common'; import * as angularCommonHttp from '@angular/common/http'; import * as angularForms from '@angular/forms'; import * as angularAnimations

问题 I have some code which posts some data to create a data record. It's in a service: Here's the code: import { Injectable } from '@angular/core'; import { HttpClient, HttpHeaders } from '@angular/common/http'; const httpOptions = { headers: new HttpHeaders({ 'Content-Type': 'application/json' }) }; @Injectable({ providedIn: 'root' }) export class ApiService { constructor(private http: HttpClient) { } create() { const postedData = { userid: 1, title: 'title here', body: 'body text' }; return

问题 I have some code which posts some data to create a data record. It's in a service: Here's the code: import { Injectable } from '@angular/core'; import { HttpClient, HttpHeaders } from '@angular/common/http'; const httpOptions = { headers: new HttpHeaders({ 'Content-Type': 'application/json' }) }; @Injectable({ providedIn: 'root' }) export class ApiService { constructor(private http: HttpClient) { } create() { const postedData = { userid: 1, title: 'title here', body: 'body text' }; return

问题 I'm trying to show a component when first load the page with lazy loading that only load the content if it's in the view. For example: - There are 10 components on the page and I want to show/scroll to the component number 7 on first load with lazy loading(for performance). How do I do this correctly? Challenge here is because these components are lazy loading and have huge images that messed up the scrollIntoView() and scrolled too much to the top passed the component. I've tried these

问题 There are multiple pages (Home & Product detail page) in my application and each page has carousel with multiple images . When i browse application home page whole page is loaded and all js & carousel js working fine and carousel initialized without any error . But when i clicks on any product detail page then angular updates center part of page while header & footer remains same . Issue - carousel is not initialized at product detail page and all images display individually instead of

问题 I want to display a date in dd/MM/YYYY format when a user pick the date using the mat Datepicker but when i use the Datepipe in Datepicker it not shows any Date when we pick <mat-form-field class="box"> <input matInput [matDatepicker]="picker" placeholder="Generate Date" maxlength="10px" [readonly]="isNew1" [ngModel]="quotation?.generateDate | date: 'dd/MM/yy'" (ngModelChange)="quotation.generateDate=$event" [ngModelOptions]="{standalone: true}"> <mat-datepicker-toggle matSuffix [for]="picker

问题 I want to display a date in dd/MM/YYYY format when a user pick the date using the mat Datepicker but when i use the Datepipe in Datepicker it not shows any Date when we pick <mat-form-field class="box"> <input matInput [matDatepicker]="picker" placeholder="Generate Date" maxlength="10px" [readonly]="isNew1" [ngModel]="quotation?.generateDate | date: 'dd/MM/yy'" (ngModelChange)="quotation.generateDate=$event" [ngModelOptions]="{standalone: true}"> <mat-datepicker-toggle matSuffix [for]="picker

问题 I want to display a date in dd/MM/YYYY format when a user pick the date using the mat Datepicker but when i use the Datepipe in Datepicker it not shows any Date when we pick <mat-form-field class="box"> <input matInput [matDatepicker]="picker" placeholder="Generate Date" maxlength="10px" [readonly]="isNew1" [ngModel]="quotation?.generateDate | date: 'dd/MM/yy'" (ngModelChange)="quotation.generateDate=$event" [ngModelOptions]="{standalone: true}"> <mat-datepicker-toggle matSuffix [for]="picker

问题 I want to display a date in dd/MM/YYYY format when a user pick the date using the mat Datepicker but when i use the Datepipe in Datepicker it not shows any Date when we pick <mat-form-field class="box"> <input matInput [matDatepicker]="picker" placeholder="Generate Date" maxlength="10px" [readonly]="isNew1" [ngModel]="quotation?.generateDate | date: 'dd/MM/yy'" (ngModelChange)="quotation.generateDate=$event" [ngModelOptions]="{standalone: true}"> <mat-datepicker-toggle matSuffix [for]="picker