how to ajax get json in jquery code example

Example 1: how to set json type jquery ajax

$.ajax({
    type: "POST",
    contentType: "application/json",
    url: 'http://localhost:16329/Hello',
    data: { name: 'norm' },
    dataType: "json"
});

Example 2: jquery ajax json

$.ajax({
  method: "POST",
  url: "some.php",
  dataType: "json",
  data: {}
}).done(json => console.log(json));