livebook/assets/js/user_form/index.js

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import { storeUserData } from "../lib/user";
/**
* A hook for the user profile form.
*
* On submit this hook saves the new data into cookie.
* This cookie serves as a backup and can be used to restore
* user data if the server is restarted.
*/
const UserForm = {
mounted() {
this.el.addEventListener("submit", (event) => {
const name = this.el.data_name.value;
const hex_color = this.el.data_hex_color.value;
storeUserData({ name, hex_color });
});
},
};
export default UserForm;