How to add event listener to Map marker[ ] array

Question

I've got a google map implementation that drops the pins on the map using a couple function calls and a marker[ ] array.

It works great, but I can't figure out how to possibly add an onClick event or other type of event listener to the function since it doesn't have a marker variable defined explicitly.

Where would I be able to add something like this?:

google.maps.event.addListener(markers, 'click', function() {
window.location.href = this.url;};

Here is my basic map code and functions:

var pinlocations = [
  ['1', {lat: 30.266758, lng: -97.739080}, 12, '/establishments/1111'],
  ['2', {lat: 30.267178, lng: -97.739050}, 11, '/establishments/1222'],
  ['3', {lat: 30.267458, lng: -97.741231}, 10, '/establishments/1333'],
  ['4', {lat: 30.388880, lng: -97.892276}, 9, '/establishments/1444']
];

      var markers = [];
      var map;

      function initMap() {
        map = new google.maps.Map(document.getElementById('map'), {
          zoom: 12,
          center: {lat: 30.267178, lng: -97.739050}
        });

      }

      function drop() {
        clearMarkers();
        for (var i = 0; i < pinlocations.length; i++) {
            var place = pinlocations[i];
            addMarkerWithTimeout(place[1], place[0], place[2], place[3], i * 200);
        }
      }

      function addMarkerWithTimeout(position, title, zindex, url, timeout) {
        window.setTimeout(function() {
          markers.push(new google.maps.Marker({
            position: position,
            map: map,
            title: title,
            zIndex: zindex,
            url: url,
            animation: google.maps.Animation.DROP
          }));  
        }, timeout); 
      }

Answer 1

You don't add an event to an array, you have to add it to each element within the array. You can do this with the .forEach() array method:

// Iterate the markers array
markers.forEach(function(marker){
  // Set up a click event listener for each marker in the array
  marker.addListener('click', function() {
    window.location.href = marker.url;
  });
});

Or, you could take another approach and add the event at the moment each individual marker gets created.

  function addMarkerWithTimeout(position, title, zindex, url, timeout) {
    window.setTimeout(function() {
      markers.push(new google.maps.Marker({
        position: position,
        map: map,
        title: title,
        zIndex: zindex,
        url: url,
        animation: google.maps.Animation.DROP
      }).addListener('click', function() {
        window.location.href = this.url;
      });  
    }, timeout); 
  }