Answer Posted / hr@tgksolutions.com
The working of typescript in Angular 8 is similar with the enabled and disabled flag, which means if you want to test whether the selected value is an object or not, then the following syntax is used " Typeof value = = = 'object' ". In angular 8 the following types of checks are used such as “Typeof value.ngOnDestroy = = = 'function' “.
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