Recent questions tagged Typescript

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typescript - Angular 4 ExpressionChangedAfterItHasBeenCheckedError

in ParentComponent => ExpressionChangedAfterItHasBeenCheckedError: Expression has changed after it was checked. Previous value: ''. ... ); } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - Angular2 use [(ngModel)] with [ngModelOptions]="{standalone: true}" to link to a reference to model's property

Let's say I have a typescript object of type Mailtype like following: export class Mailtype { constructor( ... any documentation about it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - How to return value inside subscribe Angular 4

I'm new to observables in angular. I have a problem where I want to return a value inside a subscribe method. ... I do not understand. Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - typings vs @types NPM scope

In some cases typings is used for handling TypeScript definitions (e.g. angular/angular2-seed). In other cases ... that the other doesn't? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - Retrieve hash fragment from url with Angular2

Given this url structure (over which I have no control), how can I retrieve the hash fragment using Angular2? http ... } // this one ]) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - Type 'void' is not assignable to type 'ObservableInput<{}>'

This error started to pop up after I migrated to TS 2.2.2, so I'm assuming that's the problem... The ... 'm using: Angular4 Typescript 2.2.2 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - How to list / output all routes in @Routes in my Angular2 App

I have a quick question. I'm currently looking through https://angular.io/docs/ts/latest/api/router/Router-class.html but ... .routes); ???? } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - Angular 2 creating reactive forms with nested components

My requirement is that I need to create a form with nested components. I am creating components for each ... forms nested with components. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - Angular, Http GET with parameter?

I dont know how to make an API call to such a method: [HttpGet] [ActionName("GetSupport")] public ... , { headers: headers }) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - Property 'assign' does not exist on type 'ObjectConstructor'

I am using TypeScript in my application, where I use function: Object.assign(this.success, success.json()) However, ... get rid of this error? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - What is the meaning of question mark in expressions in Angular 2?

What does values?.listArray mean here? Specifically I am interested in the question mark. [inputValue] = "values?.listArray" See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - How to throw error from RxJS map operator (angular)

I want to throw an error from my observable's map operator based on a condition. For instance if ... success, handleError) Any suggestions? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - Angular 2 - Setting selected value on dropdown list

I have run into an issue in pre-selecting values on a dropdown list in Angular 2. I set an array of colours in ... } id:number; name:string; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - Angular 2 / 4 / 5 - Ahead-of-time compilation how to

I'm trying to bootstrap my Angular 2 RC5 application following this guide https://angular.io/docs/ts/latest/guide/ ... Which tool should I use? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - How to create an Observable from static data similar to http one in Angular?

I am having a service that has this method: export class TestModelService { public testModel: TestModel; constructor ... handling in both cases. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - Angular 2 ngModel in child component updates parent component property

I made a simple UI which consist two components (parent and child). What the UI does is that when I type some ... 's <h1> do not change. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - Unit testing click event in Angular

I'm trying to add unit tests to my Angular 2 app. In one of my components, there is a button with a (click) ... HTML file. How can I do that? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript restrict count of object's properties

Is it possible to restrict the count of object properties, say I want to restrict object have only one string ... also the count of properties? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - How can I detect the inner html change in a div with angular 2?

I have a component like @Component({ selector: 'my-component', template: '<div id="myDiv">Some value comes ... the (change) event in angular. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - Element implicitly has an 'any' type because type 'Window' has no index signature?

I'm trying to create a Factory class in Typescript, but running into the following error: src/ts/classes/Factory.ts ... to changing it as well. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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731 views

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typescript - Angular 2 translation change language in application

I am new to angular 2 and I am building my first app. I have problems understanding how to change ... RN_LANGUAGE_PREFERENCE", language); } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - Get route query params

I am trying to migrate from rc1 to rc4 and i have trouble getting query string parameters. ActivatedRoute object ... Object {} Updated plunker See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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906 views

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typescript - Angular 4 checkbox change value

how could you achieve in Angular 4 that when you register in a checkbox save an "A" or "B" value. As much ... the JSON is still true or false. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - Property 'includes' does not exist on type 'string[]'

Getting the error Property 'includes' does not exist on type 'string[]' in node_modules/ng2-breadcrumb/app/components ... in an angular2 app. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - How to make a sequence of http requests in Angular 6 using RxJS

I've been looking for a solution all over the web, but couldn't find anything that fits my user case. I ... need to think about error handling. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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760 views

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typescript - webpack TS2304 Cannot find name 'Map', 'Set', 'Promise'

I have the following webpack.config.js var path = require("path"); var webpack = require('webpack'); ... TS2304 errors with webpack command? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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851 views

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typescript - How to place a dynamic component in a container

I want to create dynamic components and insert views of these components to a container. I think this can be achieved ... </container> </my-app> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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717 views

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typescript - How to load dynamic external components into Angular application

I'm facing a problem with Angular application. I would like to have an angular application written in ... an Angular4/webpack application. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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