JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://jquery-json.googlecode.com/files/jquery.json-2.2.min.js"></script>

JavaScript

var data = {
    json: $.toJSON({
        text: 'some text',
        array: [1, 2, 'three'],
        object: {
            par1: 'another text',
            par2: [3, 2, 'one'],
            par3: {}
        }
    })
}

// 1. ajax()
$.ajax({
    url:"/echo/json/",
    data:data,
    type:"POST",
    success:function(response) {
       console.log(response);
    }
});

// 2. post()
$.post("/echo/json/", data, function(response) {
    console.log(response);
});