angular8

问题 I am trying to add the index value with my ids. but getting an error as: Can't bind to 'testid' since it isn't a known property of 'input'. here is my template: <td *ngFor="let col of columns; let i = index" [ngClass]="col.class" data-testid="form-create-td-{{i}}"> what is wrong with my code? any one help me? 回答1: I think you will need property binding. So please try to replace below testid data property. <td ... [attr.data-testid]="'form-create-td-' + i"> For concatenation id property with

问题 I'm using Angular 8 and am trying to do something that seems like it should be really simple. I'm retrieving an array of records from my controller on the server using http.get. Those records have a particular type (defined within Angular) and I would like to add a computed property to that type called "meetsTarget". My problem is that it is not recognising that that property exists on the results I get back from the server. Question 2: Becasue that property is computed from other properties,

问题 I have an undefined number of arrays that can go nested unlimited. I will use this in the "filtering" section on a page where I list products. But I couldn't dynamically figure out how to create it on the html side. [ { "name": "Models", "items": [ { "name": "Fabric", "fieldType": "checkbox", "subCategories": [] }, { "name": "Linen", "fieldType": "checkbox", "subCategories": [ { "name": "Colored", "fieldType": "checkbox", "subCategories": [] }, { "name": "Solid Color", "fieldType": "checkbox"

问题 This question already has an answer here : Custom Component MdDatePicker used in reactive Form (1 answer) Closed 10 days ago . I am trying to utilize ControlValueAccessor with Angular Material datepicker. For some reason, its not not working with formControlName and a reactive form. Can someone resolve this? The wrappers are being built for certain styling and attributes. The values are sent to reactive form, etc https://material.angular.io/components/datepicker/overview Typescript: import {

问题 My ts code coding is, this.api.getPay(this.donationId).subscribe( data => { this.paymentData = data; this.paymentDetails = this.paymentData.donationDetails[0]; } ) My html code is like Project : <strong>{{paymentDetails.project_name}}</strong><br/> Status: <strong>{{paymentDetails?.status}}</strong><br/> Now project_name and Status details will be displayed. Console gets "ERROR TypeError: Cannot read property 'project_name' of undefined" If I added "?" like {{paymentDetails?.project_name}} No

问题 I opened question about dynamically generate form controllers,after that I have some issues with dynamically template generate and controllers generate. in this project,mainly I have 4 types of questions in an array.I have to generate these questions dynamically question types are, MCQ ( only have to select one answer) Multiple Select ( User can select multiple answers and at least one required) Ranking question ( user have to give the correct order of answers. answers should be unque)

问题 Here is my html rouerLink: <a [routerLink]="['create']">Create</a> - works fine. on button click I am calling the same as: But not works.. navigateTo(page) { this.router.navigate(['create']); //not works } Any one help me, what is really I am missing here? UPDATE I am navigating from parent to child here is the routes: { path: 'contentPlaceholder', data: { showNavi: true }, component: ShellContentPlaceholderComponent, children : [ { path: 'view', data: { showNavi: false }, component:

问题 Most of the tutorials say that you have to integrate angular into django but I do not want to do that. I want to deploy both on the same server with angular using node-express and django using gunicorn. But I do not know how to do it. I know how to deploy angular ssr only and django alone but not both on the same server. Thanks in advance 回答1: I'm going to answer your question on how to do what you ask, but I will also point you in a direction that I believe is more efficient, stable and

问题 I’m building a new web application which needs to work seamlessly even when there is no internet connection. I’ve selected Angular and am building a PWA as it comes with built-in functionality to make the application work offline. So far, I have the service worker working perfectly and driven by the manifest file, this very nicely caches the static content and I’ve set it to cache a bunch of API requests which I want to use whilst the application is offline. In addition to this, I’ve used

问题 Angular 8 application with material 8 throws following error on IE11 when the material menu is opened: Unable to get property 'opacity' of undefined or null reference It worked well with angular 7.2. Used IE11 Version: 11.1146.16299.0 Update version: 11.0.125 New project dependency versions: "dependencies": { "@angular/animations": "^8.0.0", "@angular/cdk": "^8.0.0", "@angular/common": "~8.0.0", "@angular/compiler": "~8.0.0", "@angular/core": "~8.0.0", "@angular/forms": "~8.0.0", "@angular