The contacts read-only property of the Navigator interface returns a ContactsManager interface which allows users to select entries from their contact list and share limited details of the selected entries with a website or application.

The following is an example of the program code

<script>// navigator.getContacts

if ("contacts" in navigator && "ContactsManager" in window) {
   document.getElementById("get-contacts").innerHTML = "Support";
} else {
   document.getElementById("get-contacts").innerHTML = "No Support";
}

// [open-source] : location:github.com/tamddk/library/tree/main/getContacts

</script>