JSFiddle - React, Tailwind, and code Playground

HTML

<input id="name"/>
<input id="type"/>
<button>click</button>

JavaScript

var data = {items: [
    {id: "1", name: "Snatch", type: "crime"}
]};

$('button').on('click',function(){
    var name = $('#name').val();
    var type = $('#type').val();
    var id = parseInt(data.items[data.items.length-1].id)+1;
        
    data.items.push({"id":id.toString(), "name":name,"type":type});
    console.log(data);
});