/
index.js
45 lines (37 loc) · 1.12 KB
/
index.js
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let subscriptionId;
const USER_UPDATED_EVT_NAME = 'user:updated';
function init(){
setupUserForm();
listenUserChange();
setupUnsubscribeButton();
}
function setupUserForm(){
const form = document.querySelector('[data-user-form]');
form.addEventListener('submit', onUserFormSubmit);
}
function onUserFormSubmit(evt){
const username = evt.currentTarget.querySelector('[name="username"]');
const date = new Date();
evt.preventDefault();
rasket.publish(USER_UPDATED_EVT_NAME, {
username: username.value,
updatedAt: date.toString()
});
}
function listenUserChange(){
subscriptionId = rasket.subscribe(USER_UPDATED_EVT_NAME, logUserChange);
}
function logUserChange(user){
const list = document.querySelector('[data-change-list]');
list.appendChild(buildUserChangeItem(user));
}
function buildUserChangeItem(user){
const item = document.createElement('li');
item.innerHTML = JSON.stringify(user);
return item;
}
function setupUnsubscribeButton(){
const button = document.querySelector('[data-unsubscribe-button]');
button.addEventListener('click', () => rasket.unsubscribe(subscriptionId));
}
init();