JSFiddle - React, Tailwind, and code Playground

HTML

<div class="result"></div>

JavaScript

var = _buildings : {
            laboratory : {
                exist : false,
                value : 1000,
            },
            office : {
                exist : false,
                value : 500,
            },
    };

var chain = 'laboratory';

$('.result').text(_buildings.chain.value);