NgIf
A structural directive that conditionally includes a template based on the value of
an expression coerced to Boolean.
When the expression evaluates to true, Angular renders the template
provided in a then clause, and when false or null,
Angular renders the template provided in an optional else clause. The default
template for the else clause is blank.
class NgIf<T = unknown> {}
ngIf
TThe Boolean expression to evaluate as the condition for showing a template.
ngIfThen
TemplateRef<NgIfContext<T>> | nullA template to show if the condition expression evaluates to true.
ngIfElse
TemplateRef<NgIfContext<T>> | nullA template to show if the condition expression evaluates to false.
ngTemplateGuard_ngIf
"binding"Assert the correct type of the expression bound to the ngIf input within the template.
The presence of this static field is a signal to the Ivy template type check compiler that
when the NgIf structural directive renders its template, the type of the expression bound
to ngIf should be narrowed in some way. For NgIf, the binding expression itself is used to
narrow its type, which allows the strictNullChecks feature of TypeScript to work with NgIf.
ngTemplateContextGuard
boolean