我正在学习Angular 2,没有Angular的经验.我正在学习本教程:https://www.barbarianmeetscoding.com/blog/2016/03/25/getting-started-with-angular-2-step-by-step-1-your-first-component/.
在添加新组件"app-people-list"并在index.html中更新相同内容后,我得到以下异常.什么地方出了错？
Unhandled Promise rejection: The selector "app-root" did not match any elements ; Zone: <root> ; Task: Promise.then ; Value: Error: The selector "app-root" did not match any elements
at DefaultDomRenderer2.webpackJsonp.../../../platform-browser/@angular/platform-browser.es5.js.DefaultDomRenderer2.selectRootElement (platform-browser.es5.js:2808)
at DebugRenderer2.webpackJsonp.../../../core/@angular/core.es5.js.DebugRenderer2.selectRootElement (core.es5.js:13710)
at createElement (core.es5.js:9259)
at createViewNodes (core.es5.js:12225)
at createRootView (core.es5.js:12154)
at callWithDebugContext (core.es5.js:13535)
at Object.debugCreateRootView [as createRootView] (core.es5.js:12852)
at ComponentFactory_.webpackJsonp.../../../core/@angular/core.es5.js.ComponentFactory_.create (core.es5.js:9945)
at ComponentFactoryBoundToModule.webpackJsonp.../../../core/@angular/core.es5.js.ComponentFactoryBoundToModule.create (core.es5.js:3333)
at ApplicationRef_.webpackJsonp.../../../core/@angular/core.es5.js.ApplicationRef_.bootstrap (core.es5.js:4822) Error: The selector "app-root" did not match any elements
at DefaultDomRenderer2.webpackJsonp.../../../platform-browser/@angular/platform-browser.es5.js.DefaultDomRenderer2.selectRootElement (http://localhost:4200/vendor.bundle.js:70399:19)
at …angular ×1