angular

问题 I have just installed the node version 12.16.1 the LTS and angular cli version 9.0.3. At the time of creating new project with cli all files in root folder are generating but it is stuck at the part of installing node packages. Is anybody facing the same issue? Please help how can we resolve it. 回答1: Every time you create a new project the angular suppose to download huge chunks of file of size around 500mb, all the time that is been taken is actually the time taken to download those file in

问题 I'm trying to learn Angular so following guides on installing and using ag-grid and Font Awesome, but I can't get an fa-icon to display inside an ag-grid cell using the cellRenderer. If I use the same icon HTML outside of the grid, it displays correctly. And if I put something like a link in place of the icon in the cell, it displays correctly. Here is my code: component.ts import { Component } from '@angular/core' import { faUserEdit } from '@fortawesome/free-solid-svg-icons'; @Component({

问题 I'm trying to learn Angular so following guides on installing and using ag-grid and Font Awesome, but I can't get an fa-icon to display inside an ag-grid cell using the cellRenderer. If I use the same icon HTML outside of the grid, it displays correctly. And if I put something like a link in place of the icon in the cell, it displays correctly. Here is my code: component.ts import { Component } from '@angular/core' import { faUserEdit } from '@fortawesome/free-solid-svg-icons'; @Component({

问题 I have three named router outlets as shown below. ... <router-outlet name="menus"><router-outlet> <router-outlet><router-outlet> <router-outlet name="footer"><router-outlet> ... In the markup I want to route the first one, menus , to a component with certain submenu junk in it as shown in the docs. <ul *ngFor="let main of menus;" routerLink="[{outlets:{menus:[{{main.link}}]}}]" class="nav-items">{{main.header}} The error I'm getting says that: Error: Cannot match any routes. URL Segment: '%5B

问题 I'm stuck with Angular2, I would like to pass parameters from a Products page (eg: product ids) to a Payment page , here is what I tried so far: payment.html : Message: {{message}} <page-products></page-products> payment.ts : import { Component, ViewChild, AfterViewInit} from '@angular/core'; import { ProductsPage } from "../../products/products"; @IonicPage() @Component({ selector: 'page-payment', templateUrl: 'payment.html' }) export class PaymentPage implements AfterViewInit { @ViewChild

问题 ive been trying to make Angular update the service variable "open_popup" for days with no luck. TLDR; What I'm trying to do, is whenever the variable "open_popup" changes, make it change on the component too also be able to change the service variable from a component function. This is what I've tried so far. app/src/app/audience-creator/shared/audience-creator.service.ts import { Injectable } from "@angular/core"; import {Observable} from "rxjs/index"; import { of } from "rxjs/index";

问题 ive been trying to make Angular update the service variable "open_popup" for days with no luck. TLDR; What I'm trying to do, is whenever the variable "open_popup" changes, make it change on the component too also be able to change the service variable from a component function. This is what I've tried so far. app/src/app/audience-creator/shared/audience-creator.service.ts import { Injectable } from "@angular/core"; import {Observable} from "rxjs/index"; import { of } from "rxjs/index";

问题 I have a component that uses router to navigate to another component with a boolean variable like this this.router.navigate(['/consume/course/' + this.id, {state: { isFirst }} ], { replaceUrl: true }); in the other component I am trying to get this variable from the router like this const isFirst = this.router.getCurrentNavigation().extras.state.isFirst; but I get this error: Cannot read property 'extras' of null Why do I have null for the current navigation? Also, this is my routing module

问题 I've tried trying to remove a row using a button click, but it doesn't work and I'm not so sure what can I do to solve this issue. Initial json displayed is: { "list": [ { "description": null, "status": false } ] } When I click the Remove button, the json displayed will become: { "list": [] } AND the selected row is not removed at all. Here's the codes below. todo-list.component.ts todoListForm: FormGroup; constructor(private toDoService: TodoService, private formBuilder: FormBuilder) { this

问题 This is how I have created a dynamic dropdown list: .html <label> Move to </label> <select [(ngModel)] = "mSelectedCategoryNameMoveTo" (click) = "onMoveToSelected()" [disabled] = "mflagDisableMoveTo" > <option *ngFor = "let category of categories" [ngValue] = "category.name" > {{category.name}} </option> </select> Here the list categories is coming from .ts file. All the variables and the functions are defined in the corresponding .ts file. The category structure .ts is as follows: export