mirror of
https://github.com/angular/angular
synced 2026-05-24 09:28:37 +00:00
64db486edc
Adds build rules for "artificially" generating `DocEntry` collections for block and element APIs. The two rules are very similar, but _just_ different enough that it's worth having two separate implementations. PR Close #52480
27 lines
569 B
Markdown
27 lines
569 B
Markdown
The `@if` block conditionally displays its content when its condition expression is truthy.
|
|
|
|
## Syntax
|
|
|
|
```html
|
|
@if (a > b) {
|
|
{{a}} is greater than {{b}}
|
|
} @else if (b > a) {
|
|
{{a}} is less than {{b}}
|
|
} @else {
|
|
{{a}} is equal to {{b}}
|
|
}
|
|
```
|
|
|
|
## Description
|
|
|
|
Content is added and removed from the DOM based on the evaluation of conditional expressions in
|
|
the `@if` and `@else` blocks.
|
|
|
|
The built-in `@if` supports referencing of expression results to keep a solution for common coding
|
|
patterns:
|
|
|
|
```html
|
|
@if (users$ | async; as users) {
|
|
{{ users.length }}
|
|
}
|
|
```
|