JSFiddle - React, Tailwind, and code Playground

HTML

<div>[ {Name: 'Jane', Id: '005b00000:00MGa7AAG'}, {Name: 'Tom', Id: '005b0000000MGa7AAF'} ]</div>

JavaScript

var json = $("div").html();

var newJson = json.replace(/'/g, '"');

newJson = newJson.replace(/([^"]+)|("[^"]+")/g, function($0, $1, $2) {
    if ($1) {
        return $1.replace(/([a-zA-Z0-9]+?):/g, '"$1":');
    } else {
        return $2; 
    } 
});

var data = JSON.parse(newJson);
alert(data[0]["Name"]);