I managed to create the first part of the loop into a PHP string and passed it to the JavaScript but was unable to get the second part working and believe me I really tried
<script type="text/javascript">
var locations = [ [ "2018", 54.3409, -1.43524, 0 ],
[ "1545497127", 54.3409, -1.43524, 1 ],
[ "2018", 54.3409, -1.43524, 2 ],
[ "2018", 54.3409, -1.43524, 3 ],
[ "1545501329", 54.3404, -1.43504, 4 ],
[ "1545501329", 54.3404, -1.43504, 5 ],
[ "1545501368", 54.3406, -1.43518, 6 ],
[ "1545501368", 54.3406, -1.43518, 7 ],
[ "1545501516", 54.3407, -1.43521, 8 ],
[ "1545501516", 54.3407, -1.43521, 9 ],
[ "1545501709", 54.3407, -1.43524, 10 ],
[ "1545501860", 54.3407, -1.43523, 11 ],
[ "1545502005", 54.3409, -1.43457, 12 ],
[ "1545502153", 54.3413, -1.43395, 13 ],
[ "1545502302", 54.3407, -1.43569, 14 ],
[ "1545502393", 54.3406, -1.43615, 15 ],
[ "1545502541", 54.3406, -1.43579, 16 ],
[ "1545504273", 54.3406, -1.43557, 17 ],
[ "1545504421", 54.3406, -1.43543, 18 ],
[ "1545504569", 54.3401, -1.43456, 19 ],
[ "1545505901", 54.3373, -1.43283, 20 ],
[ "1545506049", 54.3381, -1.43399, 21 ],
[ "1545506267", 54.3408, -1.43527, 22 ],
[ "1545507572", 54.3409, -1.43505, 23 ],
[ "1545507720", 54.3408, -1.43519, 24 ],
[ "1545507868", 54.3407, -1.43526, 25 ],
[ "1545508017", 54.3407, -1.43527, 26 ],
[ "1545508165", 54.3407, -1.43527, 27 ],
[ "1545508313", 54.3408, -1.4353, 28 ],
[ "1545508461", 54.3406, -1.43531, 29 ],
[ "1545508610", 54.3406, -1.43529, 30 ],
[ "1545508758", 54.3408, -1.43524, 31 ],
[ "1545508906", 54.3407, -1.43529, 32 ],
[ "1545509055", 54.3407, -1.43529, 33 ],
[ "1545509203", 54.3407, -1.43529, 34 ],
[ "1545510468", 54.3407, -1.43519, 35 ],
[ "1545510616", 54.3407, -1.43523, 36 ],
[ "1545510764", 54.3408, -1.43532, 37 ],
[ "1545510913", 54.3407, -1.43526, 38 ],
[ "1545511061", 54.3406, -1.43526, 39 ],
[ "1545511209", 54.3407, -1.43518, 40 ],
[ "1545511357", 54.3415, -1.4357, 41 ],
[ "1545511506", 54.3427, -1.43683, 42 ],
[ "1545511654", 54.3433, -1.43641, 43 ],
[ "1545511802", 54.3432, -1.43663, 44 ],
[ "1545511950", 54.3432, -1.43671, 45 ],
[ "1545512099", 54.3432, -1.43663, 46 ],
[ "1545512247", 54.3432, -1.43665, 47 ],
[ "1545512692", 54.3446, -1.43826, 48 ],
[ "1545512840", 54.3446, -1.43817, 49 ],
[ "1545513137", 54.3446, -1.4383, 50 ],
[ "1545513285", 54.3445, -1.43829, 51 ],
[ "1545513433", 54.3446, -1.43822, 52 ],
[ "1545514175", 54.3442, -1.43988, 53 ],
[ "1545514335", 54.3438, -1.43983, 54 ],
[ "1545514631", 54.3438, -1.43939, 55 ],
[ "1545514779", 54.3441, -1.43962, 56 ],
[ "1545514928", 54.3441, 1.16667, 57 ],
];
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 16,
// center: new google.maps.LatLng(-33.92, 151.25),
center: new google.maps.LatLng( locations[20][1], locations[20][2]),
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var infowindow = new google.maps.InfoWindow();
var marker, i;
marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3409, -1.43524),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3409, -1.43524),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3409, -1.43524),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3409, -1.43524),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3404, -1.43504),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3404, -1.43504),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3406, -1.43518),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3406, -1.43518),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3407, -1.43521),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3407, -1.43521),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3407, -1.43524),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3407, -1.43523),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3409, -1.43457),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3413, -1.43395),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3407, -1.43569),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3406, -1.43615),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3406, -1.43579),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3406, -1.43557),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3406, -1.43543),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3401, -1.43456),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3373, -1.43283),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3381, -1.43399),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3408, -1.43527),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3409, -1.43505),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3408, -1.43519),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3407, -1.43526),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3407, -1.43527),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3407, -1.43527),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3408, -1.4353),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3406, -1.43531),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3406, -1.43529),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3408, -1.43524),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3407, -1.43529),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3407, -1.43529),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3407, -1.43529),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3407, -1.43519),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3407, -1.43523),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3408, -1.43532),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3407, -1.43526),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3406, -1.43526),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3407, -1.43518),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3415, -1.4357),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3427, -1.43683),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3433, -1.43641),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3432, -1.43663),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3432, -1.43671),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3432, -1.43663),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3432, -1.43665),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3446, -1.43826),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3446, -1.43817),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3446, -1.4383),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3445, -1.43829),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3446, -1.43822),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3442, -1.43988),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3438, -1.43983),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3438, -1.43939),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3441, -1.43962),
map: map
}); marker = new google.maps.Marker({
position: new google.maps.LatLng(54.3441, 1.16667),
map: map
});
for (i = 0; i < locations.length; i++) {
google.maps.event.addListener(marker, 'click', (function(marker, i) {
return function() {
infowindow.setContent(locations[i][0]);
infowindow.open(map, marker);
}
})(marker, i));
}
</script>