JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.2.15/angular.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.2.15/angular-sanitize.js"></script>
<div ng-app="app" ng-controller="ctrl">
    <pre ng-bind-html="json | prettify"></pre>
</div>

CSS

pre {outline: 1px solid #ccc; padding: 5px; margin: 5px; }
.string { color: green; }
.number { color: darkorange; }
.boolean { color: blue; }
.null { color: magenta; }
.key { color: red; }

JavaScript

var app = angular.module("app", ['ngSanitize']);

app.filter('prettify', function () {
    
    function syntaxHighlight(json) {
        json = json.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
        return json.replace(/("(\\u[a-zA-Z0-9]{4}|\\[^u]|[^\\"])*"(\s*:)?|\b(true|false|null)\b|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?)/g, function (match) {
            var cls = 'number';
            if (/^"/.test(match)) {
                if (/:$/.test(match)) {
                    cls = 'key';
                } else {
                    cls = 'string';
                }
            } else if (/true|false/.test(match)) {
                cls = 'boolean';
            } else if (/null/.test(match)) {
                cls = 'null';
            }
            return '<span class="' + cls + '">' + match + '</span>';
        });
    }
    
    return syntaxHighlight;
});

app.controller('ctrl', function ($scope) {
    var obj = {a:1, 'b':'foo', c:[false,'false',null, 'null', {d:{e:1.3e5,f:'1.3e5'}}]};
    $scope.json = JSON.stringify(obj, undefined, 4);
});