JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/ui-lightness/jquery-ui.css">

JavaScript

var obj = {
    "Mike": 24,
    "Peter": 23,
    "Simon": 33,
    "Tom": 12,
    "Frank": 31
};

var arr = eval( '[' +
    JSON.stringify(obj)
    .slice(1,-1)
    .replace(/"[^"]+":/g,'')
    + ']');


alert(arr);