How to filter google map markers with knockout.js?

@mallory_cormier 

To filter Google Map markers with Knockout.js, you can follow these steps:

1. Create a list of markers that you want to display on the map.
2. Create an observable array in your Knockout ViewModel to hold the markers.
3. Create a filter function that will filter the markers based on some criteria.
4. Create an input field or a select dropdown in your HTML file where users can input the criteria for filtering.
5. Bind the input field or select dropdown to a Knockout observable that will track the filter criteria.
6. Use Knockout's data-bind attribute to filter the markers array based on the filter criteria.
7. Finally, update the map markers based on the filtered array.

Here's an example of how you can achieve this:

// ViewModel function ViewModel() { var self = this; self.filter = ko.observable('');

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// List of map markers
self.markers = ko.observableArray([
    { name: 'Marker 1', latLng: { lat: 40.7128, lng: -74.0060 } },
    { name: 'Marker 2', latLng: { lat: 34.0522, lng: -118.2437 } }
]);

// Filter function
self.filteredMarkers = ko.computed(function() {
    var filter = self.filter().toLowerCase();
    if (!filter) {
        return self.markers();
    } else {
        return ko.utils.arrayFilter(self.markers(), function(marker) {
            return marker.name.toLowerCase().indexOf(filter) !== -1;
        });
    }
});

}

// HTML

// Map function initMap() { var map = new google.maps.Map(document.getElementById('map'), { zoom: 4, center: { lat: 37.7749, lng: -122.4194 } });

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// Add markers to map
ko.utils.arrayForEach(viewModel.filteredMarkers(), function(marker) {
    new google.maps.Marker({
        position: marker.latLng,
        map: map
    });
});

}

// Apply bindings var viewModel = new ViewModel(); ko.applyBindings(viewModel);

This is a basic example of how you can filter Google Map markers with Knockout.js. You can customize and expand upon this code to fit your specific needs and project requirements.