You can watch/listen for changes in an Alpine data variable, and run a function when a change happens.
You do so in the x-init attribute which contains code that’s run when Alpine is initialized.
For example I have some HTML that belongs to a modal, and any time this modal is opened I want to clear the name data, so the input field is always empty:
<div
x-data="{ name: '' }"
x-init="$watch('showModal', () => { name = '' })">
<form>
<input name="name" x-model="name" />
</form>
</div>
Lessons in this unit:
| 0: | Introduction |
| 1: | Installing Alpine |
| 2: | The basics of Alpine |
| 3: | Events |
| 4: | Defining data |
| 5: | Looping |
| 6: | Binding user input to variables |
| 7: | ▶︎ Watching variables change |
| 8: | Stores |
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