如何在中声明或使组件的标记可访问
import { Component, Input, VERSION } from '@angular/core';
@Component({
selector: 'home-page',
template: `
<welcome name="{{ name }}"></welcome>
<p>
Learn from this sample application of Angular concepts.
</p>
我试图在我的项目中添加一个常规类,但我得到了
zone.js:917 Uncaught Error: Unexpected value 'Tools' declared by the module 'AppModule'.
Please add a @Pipe/@Directive/@Component annotation.
它只是一个常规的类型记录类,我希望能够在我的项目中使用
它不是指令,也不是管道,也不是组件。
export class Tools
{
pascalCase(text:string)
{
return t
我正在重用一个用于HTTP通信的服务,该服务在Angular 8下运行良好,但在Angular 9下抛出了以下错误:
Error: Cannot instantiate cyclic dependency! HttpService
at throwCyclicDependencyError (core.js:8122)
at R3Injector.hydrate (core.js:17206)
at R3Injector.get (core.js:16960)
at NgModuleRef$1.get (core.js:36337)
at Object.
在(Angular2)中,当删除对象本身时,我希望删除所有引用的对象。我正在使用Mongoose和remove中间件。所以我的question.js文件如下所示:
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var Answer = require('../models/answer');
var QuestionSchema = new Schema({
content: {type: String, required: true},
questionTx
我正在开发一个角度应用程序。当我正常使用ng serve运行它时,它运行时没有任何错误。但是,当我运行ng build --prod时,它会出现以下错误。
ERROR in Illegal State: referring to a type without a variable {"filePath":"/Users/admin/Documents/projects/simply-science-web-ui/simply-science/node_modules/@angular/forms/forms.d.ts","name":"N
我试着构建一个离子2应用程序。当我在浏览器中使用离子型服务或在模拟器上启动应用程序时,一切都很好。
但是当我每次尝试构建错误时
ionic-app-script tast: "build"
Error Type AddEvent in "PATH"/add.event.ts is part of the declarations of 2 modules: AppModule in "PATH"/app.modules.ts and AddEvent in "PATH"/add-event.module.ts.
Please co
环境: Angular 2 RC5,..从RC4升级到RC5
错误:
Uncaught EXCEPTION: Error in http://localhost:4200/app/forgot-username/forgot-username.component.html:39:60
ORIGINAL EXCEPTION: Type ModalBackdropComponent is part of the declarations of 2 modules: Myodule and AppModule!
ORIGINAL STACKTRACE:
Error: Type ModalBackdr