Cookies

Supersonic provides simple cookie helpers for setting and getting browser cookies.

Quick start

Use setCookie() to store a value and getCookie() to read it later.

<script>
  window.supersonic.init();

  window.supersonic.utility.setCookie('visited', 'true', 30);
  const visited = window.supersonic.utility.getCookie('visited');

  console.log(visited);
</script>

Set a cookie

window.supersonic.utility.setCookie('theme', 'dark', 7, {
  path: '/',
  sameSite: 'Lax',
  secure: true
});

Argument	Type	Description
name	string	The cookie name to store.
value	string	The cookie value to store.
days	number	Number of days before the cookie expires. Leave empty or 0 for a session cookie.
options	object	Optional settings such as path, sameSite, and secure.

Read a cookie

const theme = window.supersonic.utility.getCookie('theme');

Argument	Type	Description
name	string	The cookie name to read from the browser.

Notes

• The helper uses document.cookie under the hood.
• The days argument controls the expiration time.
• By default, cookies are created with the current path and a SameSite=Lax policy.
• secure is enabled automatically when the page is served over HTTPS.