java script how to write an asyn get function code example

Example 1: async await

async function showAvatar() {
	// read
  	await setTimeout(resolve, 3000);
    // read next 3s
}

showAvatar();

Example 2: await async

function afterPrintSave() {
    Xrm.Page.data.save().then(
        function () {
            resolve();
        },
        function (err) {
            resolve(alert(err.message));
        }
    );
}