Hey,
If you’re looking for an event called when page loads, there is api.onPageChange.
api.onPageChange((url, title) => {
console.log('the page changed to: ' + url + ' and title ' + title);
});
If you’re looking for something else, can you elaborate on what you want to achieve? We could give you a more precise answer.
On a side note, you have a ton of documentation that you might find helpful: Developer Guides - Discourse Meta.