如何修复 Angular Parser Error: Private identifiers are not supported. Unexpected private identifier: ...

问题:

尝试运行 Angular 应用时,你看到以下错误:

error_message.txt
Error: src/app/my-component.html:18:31 - error NG5002: Parser Error: Private identifiers are not supported. Unexpected private identifier: #noName

与如下源代码相关

ngif_private_identifier_bad.html
<span *ngIf="name ; else #noName">
    {{name}}
</span>
<ng-template #noName>
    <span><i>Name not configured</i></span>
</ng-template>

解决方案

; else #noName 子句中,删除 # 字符 => ; else noName 来修复错误:

ngif_private_identifier_fixed.html
<span *ngIf="name ; else noName">
    {{name}}
</span>
<ng-template #noName>
    <span><i>Name not configured</i></span>
</ng-template>

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