web api instance method
ContactsManager: getProperties() method
Secure contextLimited availability
The getProperties() method of the
ContactsManager interface returns a Promise which resolves
with an Array of strings indicating which contact
properties are available.
Syntax
getProperties()
Parameters
None.
Return value
Returns a Promise that resolves with an Array of strings naming the contact properties that can be returned by the current system.
Properties can include the following:
'name': The contact’s name.'tel': The telephone number(s) of the contact.'email': The email address of the contact.'address': The contact’s postal address.'icon': The avatar of the contact.
Exceptions
No exceptions are thrown.
Examples
Verify Property Support
The following asynchronous function uses the getProperties() method to check
whether the current system supports the icon property.
async function checkProperties() {
const supportedProperties = await navigator.contacts.getProperties();
if (!supportedProperties.includes("icon")) {
console.log("Your system does not support getting icons.");
}
}
Select Using Only Supported Properties
The following example is similar to one for the select() method. Instead of hard-coding the properties passed to select(), it uses getProperties() to ensure that only supported properties are passed. Otherwise, select() might throw a TypeError. handleResults() is a developer defined function.
const supportedProperties = await navigator.contacts.getProperties();
async function getContacts() {
try {
const contacts = await navigator.contacts.select(supportedProperties);
handleResults(contacts);
} catch (ex) {
// Handle any errors here.
}
}