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Angular2 路由 : Loading twice

转载 作者:太空狗 更新时间:2023-10-29 17:08:49 28 4
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我将 Angular2 与路由一起使用,我的页面在初始加载时显示重复内容。单击任何链接(Page1 或 Page2)后,一切正常(不再有重复内容)。为什么我在初始加载时得到重复的内容以及我需要什么才能让它只显示一次

屏幕截图 enter image description here

index.html

<html>
<head>
<base href="/">
<title>Angular QuickStart</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" />
<link rel="stylesheet" href="styles.css">
<!-- 1. Load libraries -->
<!-- Polyfill(s) for older browsers -->
<script src="node_modules/core-js/client/shim.min.js"></script>
<script src="node_modules/zone.js/dist/zone.js"></script>
<script src="node_modules/reflect-metadata/Reflect.js"></script>
<script src="node_modules/systemjs/dist/system.src.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<!-- 2. Configure SystemJS -->
<script src="systemjs.config.js"></script>
<script>
System.import('app').catch(function(err){ console.error(err); });
</script>
</head>
<!-- 3. Display the application -->
<body>
<my-app>
Loading...
</my-app>

</body>
</html>

应用程序模块.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { Page1Component } from './Page1/Page1.component';
import { Page2Component } from './Page2/Page2.component';
import { RouterModule } from '@angular/router';


@NgModule({
imports: [BrowserModule,

RouterModule.forRoot([
{ path: '', component: AppComponent },
{ path: 'Page1', component: Page1Component },
{ path: 'Page2', component: Page2Component }
])
],
declarations: [AppComponent, Page1Component, Page2Component],
bootstrap: [AppComponent]
})
export class AppModule { }

App.html(在初始请求期间加载)

    <div class="container">
<div class="row">
<nav class="navbar navbar-default">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">Brand</a>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li class="active"><a [routerLink]="['/Page1']">Page1 <span class="sr-only">(current)</span></a></li>
<li><a [routerLink]="['/Page2']">Page2</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li role="separator" class="divider"></li>
<li><a href="#">Separated link</a></li>
<li role="separator" class="divider"></li>
<li><a href="#">One more separated link</a></li>
</ul>
</li>
</ul>
<form class="navbar-form navbar-left">
<div class="form-group">
<input type="text" class="form-control" placeholder="Search">
</div>
<button type="submit" class="btn btn-default">Submit</button>
</form>
<ul class="nav navbar-nav navbar-right">
<li><a href="#">Link</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li role="separator" class="divider"></li>
<li><a href="#">Separated link</a></li>
</ul>
</li>
</ul>
</div><!-- /.navbar-collapse -->
</div><!-- /.container-fluid -->
</nav>
</div>
<div class="row">
<div class="md-col-2"></div>
<div class="md-col-10"><router-outlet></router-outlet></div>
</div>
</div>

最佳答案

AppComponent 不应该是路由的一部分。这是持有根导出的东西。

{ path: '', component: AppComponent },

对于基本路径,您应该做的是决定哪个组件/路径应该是默认 View ,然后重定向到该路径。例如,如果 page1 应该是默认 View ,那么做

{ path: '', redirectTo: 'page1', pathMatch: 'full' },

关于Angular2 路由 : Loading twice,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/40198685/

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