JSFiddle - React, Tailwind, and code Playground

by grant

HTML

<div id="test"></div>

JavaScript

var data={"DATA": [{"id":11,"name":"ajax","subject":"OR","mark":63},
{"id":12,"name":"ajax","subject":"OR","mark":63},
{"id":13,"name":"ajax","subject":"OR","mark":63},
{"id":14,"name":"ajax","subject":"OR","mark":63},
{"id":15,"name":"ajax","subject":"OR","mark":63},
{"id":16,"name":"ajax","subject":"OR","mark":63},
{"id":20,"name":"ajax","subject":"OR","mark":63},
{"id":20,"name":"fred","subject":"OR","mark":63},
{"id":20,"name":"fred","subject":"OR","mark":63}],
"COUNT":"130"};



var UniqueNames= $.unique(data.DATA.map(function (d) {
    return d.name; d.subject;}));
                                

$('#test').html(UniqueNames);