localStorage
is not reactive but I needed to “watch” it because my app uses localstorage and didn’t want to re-write everything so here’s what I did using CustomEvent
.
I would dispatch a CustomEvent
whenever you add something to storage
localStorage.setItem('foo-key', 'data to store')
window.dispatchEvent(new CustomEvent('foo-key-localstorage-changed', {
detail: {
storage: localStorage.getItem('foo-key')
}
}));
Then where ever you need to watch it do:
mounted() {
window.addEventListener('foo-key-localstorage-changed', (event) => {
this.data = event.detail.storage;
});
},
data() {
return {
data: null,
}
}