Leaflet external GeoJSON File ajax

HTML

<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.6.4/leaflet.css">
<script src="http://cdn.leafletjs.com/leaflet-0.6.4/leaflet.js"></script>
<script src='leaflet-ajax.js'></script>
<a href="#" onclick="return getSuccessOutput();"> test success </a> | <a href="#" onclick="return getFailOutput(); return false;"> test failure</a>
<div id="map"></div>
<div id="info">
    <h2>Waiting for the Ajax Callback...</h2>
</div>

Leaflet validate and get external GeoJSON File with ajax
<p>Validation-Response: <span id="antwort"></span></p>

CSS

#map {
    height: 400px;
}
#info {
    width:250px;
    height:100px;
    background:rgba(255, 255, 255, 0.7);
    border: 1px solid #617EF6;
    border-radius:5px;
    position:fixed;
    top:200px;
    left:calc(50% - 125px);
    margin:auto;
    padding:10px;
    color:#617EF6;
}

JavaScript

// Create the map
var map = L.map('map').setView([0, 0], 5);

// Set up the OSM layer
L.tileLayer(
    'http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
    maxZoom: 18
}).addTo(map);



function processSuccess(data) {
    if (data.status === 'ok') {
        $("#antwort").html('You just posted some valid GeoJSON!. Data Status is: <b>'+data.status+'</b>' );
    } else if (data.status === 'error') {
        alert('There was a problem with your GeoJSON: ' + data.message);
    }
}

function processError(e) {
    alert('There was a problem with your ajax.');
    console.log(e);
}




   
function getSuccessOutput() {
$.ajax({
    type: "GET",   
    url: 'http://geojsonlint.com/validate?url=https://gist.githubusercontent.com/anonymous/d63b83bf134aa3185f53/raw/1f988fd8476780b56c737f2060c19d5926369402/map.geojson',
    dataType: 'json',
    success: function (response) {
        geojsonLayer = L.geoJson(response).addTo(map);
        map.fitBounds(geojsonLayer.getBounds());
        $("#info").fadeOut(50000);
    }
});
    return false;
}