JSFiddle - React, Tailwind, and code Playground

JavaScript

var dns_types = '{"A":"ip","AAAA":"ipv6","CNAME":"target","MX":"","TXT":"","SRV":"","NS":""}';

var data = [
    {
        "target": "1.2.3.5",
        "ref": 56283838,
        "host": "www.computerbuilder.co.uk",
        "type": "CNAME"
    }
];

for(var i in data) {
	alert( data[i].target );
}