blocks|key|1607563|text|在您的组件中：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1607564|import+{Router}+from+'@angular/router';

isActive(instruction:+any[]):+boolean+{
++//+Set+the+second+parameter+to+true+if+you+want+to+require+an+exact+match.
++return+this.router.isActive(this.router.createUrlTree(instruction),+false);
}|code-block|syntax|javascript|1607565|在您的HTML中：|1607566|<a+[class.active]="isActive(['user',+currentUser.name])">|1607567|Router.isActive()+documentation+on+angular.io|offset|length|style|CODE|1607568|entityMap|0|LINK|mutability|MUTABLE|url|https://angular.io/api/router/Router#isActive^0|0|0|0|0|0|H|0|19|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|10|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|12|8|@$M|13|N|14|O|P]]|9|@$M|15|N|16|1|17]]|A|$]]|$1|Q|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]]]

In your component:
<pre><code>import {Router} from '@angular/router';

isActive(instruction: any[]): boolean {
 // Set the second parameter to true if you want to require an exact match.
 return this.router.isActive(this.router.createUrlTree(instruction), false);
}
</code></pre>
In your HTML:
<pre><code>&lt;a [class.active]=&quot;isActive(['user', currentUser.name])&quot;&gt;
</code></pre>
<a href="https://angular.io/api/router/Router#isActive" rel="nofollow noreferrer"><code>Router.isActive()</code> documentation on angular.io</a>

blocks|key|1646549|text|接受的答案对我不起作用，我只想突出显示顶级路由匹配，所以我使用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1646550|isActive(url):+boolean+{
++++return+this.router.url.includes(url);
}|code-block|syntax|javascript|1646551|和：|1646552|[class.active]="isActive('url')"|1646553|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Accepted answer didn't work for me and I just wanted to highlight top level route matches so I used: 

<pre><code>isActive(url): boolean {
 return this.router.url.includes(url);
}
</code></pre>

and: 

<pre><code>[class.active]="isActive('url')"
</code></pre>

blocks|key|1607570|text|仅当路由更改时，才会在初始负载时评估routerLinkActive。当链接更改时，不会重新评估它。因此，动态生成链接不适用于routerLinkActive。Victor+Bredihin的解决方案在渲染过程中评估组件函数时起作用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1607571|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

routerLinkActive is evaluated on initial load and only when route is changed. It is no re-evaluated when the link is changed. Hence, dynamically generated link do not work with routerLinkActive.
Victor Bredihin's solution above works as the component function is evaluated during rendering.

blocks|key|2046901|text|我发现以下变通方法也适用于我的代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2046902|​|2046903|<a+[routerLink]=['user',+currentUser.name]
+++[routerLinkActive]='"active+dummyclassname-"+%2B+currentUser.name'>
+++{{currentUser.name}}
</a>|code-block|syntax|javascript|2046904|2046905|即在重新验证'routerLinkActive‘时欺骗角度。|2046906|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|P|8|@]|9|@]|A|$G|H]]|$1|I|3|C|5|6|7|Q|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|R|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|M|$]]

I found that the following work-around also works for my code:

<div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;a [routerLink]=['user', currentUser.name]
 [routerLinkActive]='"active dummyclassname-" + currentUser.name'&gt;
 {{currentUser.name}}
&lt;/a&gt;</code></pre>
</div>
</div>


I.e. tricking Angular in revalidating 'routerLinkActive'.

blocks|key|2046908|text|如下所示更改您的html：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2046909|<a+[routerLink]=['user',+currentUser.name]+
++routerLinkActive='active'>
++++{{currentUser.name}}
</a>|code-block|syntax|javascript|2046910|您还可以检查Why+Angular2+routerLinkActive+sets+active+class+to+multiple+links?|offset|length|2046911|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/39181539/why-angular2-routerlinkactive-sets-active-class-to-multiple-links^0|0|0|6|1U|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

Change your html as below :

<pre><code>&lt;a [routerLink]=['user', currentUser.name] 
 routerLinkActive='active'&gt;
 {{currentUser.name}}
&lt;/a&gt;
</code></pre>

You can also check <a href="https://stackoverflow.com/questions/39181539/why-angular2-routerlinkactive-sets-active-class-to-multiple-links">Why Angular2 routerLinkActive sets active class to multiple links?</a>

blocks|key|2027134|text|可以对链接元素的祖先应用选项|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2027135|[routerLinkActiveOptions]="{exact:+true}"|code-block|syntax|javascript|2027136|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can apply an option for ancestors of linked elements
<pre><code>[routerLinkActiveOptions]=&quot;{exact: true}&quot;
</code></pre>

RouterLinkActive is not working when using a dynamically generated link when navigating through the app itself.

e.g. in my top navigation i have this;

<pre><code>&lt;a [routerLink]=['user', currentUser.name] routerLinkActive='active'&gt;{{currentUser.name}}&lt;/a&gt;
</code></pre>

Whilst the hardcoded version would work.

<pre><code>&lt;a [routerLink]=['user','bob']&gt;View Bobs Account&lt;/a&gt;
</code></pre>

A plunk for this is here; <a href="https://plnkr.co/edit/BYKMucE3Y75uJSpV5VWx?p=preview" rel="noreferrer">https://plnkr.co/edit/BYKMucE3Y75uJSpV5VWx?p=preview</a>

Click on "John" and "Dynamic Router Link Name = " and "John" should both be active. This sometimes work on the first click, if so, then click back to "Home", the click again on "John", you'll see only the hardcoded link is registered as active, even though the hrefs are identical.

Is this designed/impossible? or am i setting something incorrectly?

RouterLinkActive for RouterLink with parameters (/dynamic)

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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在应用程序本身导航时使用动态生成的链接时，RouterLinkActive不起作用。例如，在我的顶部导航中，我有这个；<a [routerLink]=['user', currentUser.name] routerLinkActive='active'>{{currentUser.name}}</a>而硬编码版本可以工作。<a [routerLink]=['user','bob']>View B

问带参数的RouterLink的RouterLinkActive (/dynamic)
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