<< (When a part of the webpage reactively shows because of a variable change, you may want to trigger an animation or data transformation)
Can x-show trigger a function call?
\>>
In Alpine.js, the `x-show` directive is specifically designed for conditional rendering, i.e., showing or hiding an element based on the truthiness of an expression. It does not inherently trigger a function call when an element is shown or hidden.
However, if you want to execute a function when an element's visibility changes, you can do so indirectly by tying the function call to the same reactive state that `x-show` uses. For example, you can use a watcher or execute a function within methods that change the state used by `x-show`.
Here's a modified example of the previous SPA where a function is called when the page changes:
```html
SPA with Function Calls on Visibility Change
Page 1 Content
Page 2 Content
Page 3 Content
Current Page:
```
In this version:
- The `changePage` method is used to change the page, ensuring that the page number remains within valid bounds.
- Whenever the page changes, `changePage` calls `onPageChange`, where you can place the code that should be executed when the page changes.
- The `x-on:click` directives on the buttons call `changePage` with either `-1` (previous page) or `1` (next page) as an argument.
This approach allows you to perform actions in response to changes in the state that `x-show` depends on, without directly tying function calls to the `x-show` directive itself.