Javascript Angular2-如何使用OR语句？

因此，我正在使用活动管线来操纵菜单：

我的菜单如下所示：

<li [class.router-link-active]="currentPath == '/link1'">
     <a [routerLink]="['link1']"><span>Link 1 option</span></a>
     <ul>
        <li><a [routerLink]="['link1']">Link 1 option</a></li>
        <li><a [routerLink]="['link2']">Link 2 option</a></li>
        <li><a [routerLink]="['link3']">Link 3 option</a></li>
    </ul>
</li>

['link1','link2','link3'].indexOf(currentPath) > -1

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如何在Angular2中使用OR语句？

OR的JavaScript运算符是

|

currentPath == '/link1' || currentPath == '/link2' || currentPath == '/link3'

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“or”的JavaScript运算符是

|

currentPath == '/link1' || currentPath == '/link2' || currentPath == '/link3'

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您可以像这样使用数组的indexOf方法：

<li [class.router-link-active]="currentPath == '/link1'">
     <a [routerLink]="['link1']"><span>Link 1 option</span></a>
     <ul>
        <li><a [routerLink]="['link1']">Link 1 option</a></li>
        <li><a [routerLink]="['link2']">Link 2 option</a></li>
        <li><a [routerLink]="['link3']">Link 3 option</a></li>
    </ul>
</li>

['link1','link2','link3'].indexOf(currentPath) > -1

---

您可以像这样使用数组的indexOf方法：

<li [class.router-link-active]="currentPath == '/link1'">
     <a [routerLink]="['link1']"><span>Link 1 option</span></a>
     <ul>
        <li><a [routerLink]="['link1']">Link 1 option</a></li>
        <li><a [routerLink]="['link2']">Link 2 option</a></li>
        <li><a [routerLink]="['link3']">Link 3 option</a></li>
    </ul>
</li>

['link1','link2','link3'].indexOf(currentPath) > -1