我最近第一次开始使用 angular/flex 并且不确定布局容器嵌套。在下面的代码中，导航标签是一个角材料侧边导航，它在左侧打开，然后将其余内容推到右侧。我注意到此时（当我刚开始时它不是这样的）sidenav 最近在我打开/关闭它时似乎有点滞后。它在动画中途冻结几秒钟，然后完全打开/关闭。我在一行 fxLayout 容器中嵌套了列和更多行 fxLayout 容器，并认为这可能是 sidenav 动画性能问题的原因？我是否通过嵌套所有这些导致性能问题的容器使事情变得过于复杂？
我的代码：
<div fxLayout fxAlign="start start">
<mat-toolbar color="primary">
<button mat-icon-button (click)="toggleSidenav()">
<mat-icon aria-label="menu">
<i class="material-icons">restaurant_menu</i>
</mat-icon>
</button>
<span>POC Toolbar</span>
<span class="fill-remaining-space"></span>
<div class="rhs">
<mat-icon class="rhs-icon fa fa-home fa-lg"></mat-icon>
<span class="rhs-item">Home</span>
<mat-icon class="rhs-icon fa fa-sign-out fa-lg" aria-hidden="true"></mat-icon>
<span class="rhs-item">Logout</span>
<mat-icon class="rhs-icon fa fa-key fa-lg"></mat-icon>
<span class="rhs-item">Password</span>
<mat-icon class="rhs-icon fa fa-sitemap fa-lg"></mat-icon>
<span class="rhs-item">Site map</span>
</div>
</mat-toolbar>
</div>
<div fxLayout="row" fxLayoutAlign="start" fxLayoutGap="20px">
<div fxFlex>
<navigation [state]="showMenu"></navigation>
</div>
<div fxFlex="100%">
<div fxLayout="column" fxLayoutGap="20px">
<div>
<h1>Dashboard</h1>
</div>
<div>
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</div>
<div>
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</div>
<div>
<h2>Sample Angular/Flex Column Layout</h2>
</div>
</div>
<div fxLayout fxLayoutGap="15px">
<div fxFlex="33%">
<h3>Notes</h3>
<ul>
<li>we're using responsive css & Angular(Angular-material & Angular/flex) This allows us to show (or hide) things like the left menu and the number of columns displayed by dataTables.</li>
<li>The amount of "Custom" css we've used is actually very little, prefering rather to make use of the framework's built in features.</li>
<li>Angular reactive forms and validators should probably replace the generic php form.</li>
<li>No server side php is used.</li>
</ul>
</div>
<div fxFlex="33%">
<h3>Example views</h3>
<ul>
<li><a href="#">Login Screen</a></li>
<li><a href="#">Home Page</a> » Ledger system » Sales ledger » Customer master files</li>
<li><a href="#">Customer Master Search</a></li>
<li><a href="#">Customer Master List</a></li>
<li><a href="#">detail Customer Master</a></li>
<li><a href="#">update Customer Master</a></li>
<li><a href="#">detail Account</a> - Click on suburb <i class="fa fa-info-circle"></i></li>
<li><a href="#">Lookup Screen(Generic)</a> - Click on suburb <i class="fa fa-search"></i></li>
</ul>
</div>
<div fxFlex="33%">
<h3>Keyboard Shortcuts</h3>
<ul>
<li><Ctrl + b: Go back/li>
<li>Ctrl + i: Launch info</li>
<li>Ctrl + h: Launch help</li>
<li>Ctrl + l: Show or hide menu</li>
<li>Ctrl + n: Add new item</li>
<li>Ctrl + p: Print</li>
<li>Ctrl + r: reload table data</li>
<li>Ctrl + <em>any other</em> page specific function you ned</li>
</ul>
</div>
</div>
</div>
</div>
my navigation component html:
<mat-sidenav-container position="start" class="custom-sidenav-container">
<mat-sidenav #sidenav mode="side" opened="false">
Navigation
<ul class="sn-list">
<li>
<mat-icon class="sn-item">
<i class="material-icons">dashboard</i>
</mat-icon>
<a class="sn-item" href="#">Dashboard</a>
</li>
<li>
<mat-icon class="sn-item">
<i class="material-icons">archive</i>
</mat-icon>
<span class="sn-item" [matMenuTriggerFor]="stockSystemMenu">Stok System</span>
<mat-menu [overlapTrigger]="false" #stockSystemMenu="matMenu">
<button mat-menu-item>
<mat-icon class="sn-item">
<i class="material-icons">chevron_right</i>
</mat-icon>
<span class="sn-item">Service 1</span>
</button>
<button mat-menu-item>
<mat-icon class="sn-item">
<i class="material-icons">chevron_right</i>
</mat-icon>
<span class="sn-item">Service 2</span>
</button>
<button mat-menu-item>
<mat-icon class="sn-item">
<i class="material-icons">chevron_right</i>
</mat-icon>
<span class="sn-item">Service 3</span>
</button>
</mat-menu>
</li>
<li>
<mat-icon class="sn-item">
<i class="material-icons">shopping_cart</i>
</mat-icon>
<span class="sn-item" [matMenuTriggerFor]="salesMenu">Sales / Purchases</span>
<mat-menu [overlapTrigger]="false" #salesMenu="matMenu">
<button mat-menu-item>
<mat-icon class="sn-item">
<i class="material-icons">chevron_right</i>
</mat-icon>
<span class="sn-item">Service 1</span>
</button>
<button mat-menu-item>
<mat-icon class="sn-item">
<i class="material-icons">chevron_right</i>
</mat-icon>
<span class="sn-item">Service 2</span>
</button>
<button mat-menu-item>
<mat-icon class="sn-item">
<i class="material-icons">chevron_right</i>
</mat-icon>
<span class="sn-item">Service 3</span>
</button>
</mat-menu>
</li> </ul>
</mat-sidenav>
<div class="sn-content">
</div>
</mat-sidenav-container>