how to change the data of an already existing ajax 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: get request jquery

$.get( "ajax/test.html", function( data ) {
  $( ".result" ).html( data );
  alert( "Load was performed." );
});