entityMap|blocks|key|9fknh|text|假设这个html模板链接到一个实际的组件，我建议在返回类的组件中创建一个方法，并在"ngClass“指令中使用它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|21m0q^0|0^^$0|$]|1|@$2|3|4|5|6|7|8|D|9|@]|A|@]|B|$]]|$2|C|4|-4|6|7|8|E|9|@]|A|@]|B|$]]]]

<p>Assuming this html template is linked to an actual component, I'd suggest to create a method in the component  that return the class, and just use it in your "ngClass" directive.</p>


entityMap|blocks|key|dtn8l|text|声明类还有另一种方法。就像这样：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4jc90|<div
++++class="attendees-list__item-order-status+course-details-attendees+text+text-cooler-grey+align-self-center+pl-3"
++++[ngClass]="heading+===+'Abrechenbare+Buchungen'+?+'col-md-4'+:+'+col-md-3'"
++++[class.text--line-through]="(heading+===+'Abrechenbare+Buchungen'+%7C%7C+heading+===+'Kürzlich+abgerechnete+Buchungen')+&&+attendee?.orderStatus+==+'CANCELLED'">
++{{+attendee?.lastName+}},+{{+attendee?.firstName+}}
</div>|code-block|syntax|javascript|5prrv^0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|I|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|J|9|@]|A|@]|B|$F|G]]|$2|H|4|-4|6|7|8|K|9|@]|A|@]|B|$]]]]

<p>There's another way of declaring class. Like that:</p>

<pre><code>&lt;div
    class="attendees-list__item-order-status course-details-attendees text text-cooler-grey align-self-center pl-3"
    [ngClass]="heading === 'Abrechenbare Buchungen' ? 'col-md-4' : ' col-md-3'"
    [class.text--line-through]="(heading === 'Abrechenbare Buchungen' || heading === 'Kürzlich abgerechnete Buchungen') &amp;&amp; attendee?.orderStatus == 'CANCELLED'"&gt;
  {{ attendee?.lastName }}, {{ attendee?.firstName }}
&lt;/div&gt;
</code></pre>


entityMap|blocks|key|6nfm2|text|angular最佳实践表明，evit在HTML中添加了逻辑。把它移到Ts。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|656eo|在ts中添加一个getter：|cp766|++get+useColFour()+{
++++return+(
++++++(this.heading+===+'Abrechenbare+Buchungen'+%7C%7C
++++++++this.heading+===+'Kürzlich+abgerechnete+Buchungen')+&&
++++++this.attendee['orderStatus']+==+'CANCELLED'
++++);
++}|code-block|syntax|javascript|409o8|更改您的html：|1boeb|<div+class="attendees-list__item-order-status+course-details-attendees+text+text-cooler-grey+align-self-center+pl-3"
++++++++++[ngClass]="useColFour+?+'col-md-4'+:+'+col-md-3'
++++++++++"
++++++++>
++++++++++{{+attendee?.lastName+}},+{{+attendee?.firstName+}}
++++++++</div>|8rogf^0|0|0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|O|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|P|9|@]|A|@]|B|$]]|$2|E|4|F|6|G|8|Q|9|@]|A|@]|B|$H|I]]|$2|J|4|K|6|7|8|R|9|@]|A|@]|B|$]]|$2|L|4|M|6|G|8|S|9|@]|A|@]|B|$H|I]]|$2|N|4|-4|6|7|8|T|9|@]|A|@]|B|$]]]]

<p>The angular best practices says that evit add logic in your HTML. move it to Ts.</p>

<p>Add in your ts a getter:</p>

<pre><code>  get useColFour() {
    return (
      (this.heading === 'Abrechenbare Buchungen' ||
        this.heading === 'Kürzlich abgerechnete Buchungen') &amp;&amp;
      this.attendee['orderStatus'] == 'CANCELLED'
    );
  }
</code></pre>

<p>change your html:</p>

<pre><code>&lt;div class="attendees-list__item-order-status course-details-attendees text text-cooler-grey align-self-center pl-3"
          [ngClass]="useColFour ? 'col-md-4' : ' col-md-3'
          "
        &gt;
          {{ attendee?.lastName }}, {{ attendee?.firstName }}
        &lt;/div&gt;
</code></pre>


entityMap|blocks|key|a4fj5|text|如果您真的想将其保留在标记中：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|ab8e8|[ngClass]="{'col-md-4':+heading+===+'Abrechenbare+Buchungen',+'col-md-3':+heading+!==+'Abrechenbare+Buchungen',+'text--line-through':+attendee?.orderStatus+==+'CANCELLED'}"|code-block|syntax|javascript|c9be2^0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|I|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|J|9|@]|A|@]|B|$F|G]]|$2|H|4|-4|6|7|8|K|9|@]|A|@]|B|$]]]]

<p>If you really want to keep it in the markup:</p>

<pre class="lang-html prettyprint-override"><code>[ngClass]="{'col-md-4': heading === 'Abrechenbare Buchungen', 'col-md-3': heading !== 'Abrechenbare Buchungen', 'text--line-through': attendee?.orderStatus == 'CANCELLED'}"
</code></pre>


entityMap|blocks|key|88qth|text|使用这样的函数会很好，而不是把HTML搞得乱七八糟|type|unstyled|depth|inlineStyleRanges|entityRanges|data|93o92|+<input+type="text"++[class]="getAgeTextColor(form.get('ActiveAge').value)"+class="form-control-plaintext"+[ngClass]="{'form-control-plaintext':+true}"+formControlName="ActiveAge">

getAgeTextColor(ActiveAge){
++if(ActiveAge+!=+null){
++++const+months+=+ActiveAge.split('+')[0];
++++if(months+>=+24){
++++++return+'text-green';
++++}else+if(months+>+12+&&+months+<+24){
++++++return+'text-yellow';
++++}else+if(months+<=+12){
++++++return+'text-red';
++++}
++}else{
++++return+'';
++}
}|code-block|syntax|javascript|ch6gn^0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|I|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|J|9|@]|A|@]|B|$F|G]]|$2|H|4|-4|6|7|8|K|9|@]|A|@]|B|$]]]]

<p>Use function like this that will be good instead of messing up HTML</p>

<pre><code> &lt;input type="text"  [class]="getAgeTextColor(form.get('ActiveAge').value)" class="form-control-plaintext" [ngClass]="{'form-control-plaintext': true}" formControlName="ActiveAge"&gt;

getAgeTextColor(ActiveAge){
  if(ActiveAge != null){
    const months = ActiveAge.split(' ')[0];
    if(months &gt;= 24){
      return 'text-green';
    }else if(months &gt; 12 &amp;&amp; months &lt; 24){
      return 'text-yellow';
    }else if(months &lt;= 12){
      return 'text-red';
    }
  }else{
    return '';
  }
}
</code></pre>


<p>I looked through similar questions but coudn't wrap my head around the solution I am looking for.</p>

<p>So basically I have this piece of code:</p>

<pre><code> &lt;div class="attendees-list__item-order-status course-details-attendees text text-cooler-grey align-self-center pl-3"
          [ngClass]="
            heading === 'Abrechenbare Buchungen' ? 'col-md-4' : ' col-md-3'
          "
        &gt;
          {{ attendee?.lastName }}, {{ attendee?.firstName }}
        &lt;/div&gt;
</code></pre>

<p>I would like to modify and add an extra statement. The logic will be if (<code>heading === 'Abrechenbare Buchungen'</code> or if <code>heading === 'Kürzlich abgerechnete Buchungen'</code>) and <code>attendee?.orderStatus == 'CANCELLED'</code>, then it should add the class <code>'text--line-through'</code> to both <code>col-md-3</code> and <code>col-md-4</code>.</p>

<p>I tried with <code>"||"</code> as I saw in other simialr questions but could't find a working solution, I wasn't writing the syntax correctly most probably.</p>


ngClass with multiple/different statements

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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 我看过类似的问题，但不能理解我正在寻找的解决方案。 所以基本上我有这段代码：  <div class="attendees-list__item-order-status course-details-attendees text text-cooler-grey align-self-center pl-3"   ...

问具有多个/不同语句的ngClass
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