how to insert ajax result json format into Datatable?

Question

$.ajax({
    url: "apex/demopage",
    success: function(resp) {

    }
})

//and my resp coming as follows

[
    {
        "attributes": {
            "type": "something",
            "url": "something"
        },
        "fname": "something",
        "lname": "something"
    },
    {
        "attributes": {
            "type": "something",
            "url": "something"
        },
        "fname": "something",
        "lname": "something"
    }
]

Answer 1

In datatable, you can customize columns data to specify which property to use for columns. Here is an example below:

// JSON structure for each row in this example:
//   {
//      "engine": {value},
//      "browser": {value},
//      "platform": {value},
//      "version": {value},
//      "grade": {value}
//   }
$('#example').dataTable( {
  "ajaxSource": "sources/objects.txt",
  "columns": [
    { "data": "engine" },
    { "data": "browser" },
    { "data": "platform" },
    { "data": "version" },
    { "data": "grade" }
  ]
} );

For additional details, refer:

1. Ajax data source (objects)
2. Nested object data (objects)