Assign ID to marker in leaflet

Question

So i try to achieve a result as on foursquare: https://foursquare.com/explore?cat=drinks&mode=url&near=Paris which is when you clik on a marker on the map, it scrol

Answer 1

A fairly straight forward and easy way to accomplish creating an array of clickable markers within a leaflet map object is to manipulate the class list of the created marker by adding a custom incremented class name to each marker. Then it is easy to create a listener and know which marker was clicked. By skipping the active one or not, each has a retrievable click event with a reliable ID.

  // creates markers, each with a leaflet supplied class
  if (length === 1) {
    for (i = 0; i < parks.length; ++i) {
      if (parks[i].parksNumber !== parks.parksNumber)
        L.marker([parks[i].latitude, parks[i].longitude], {
          icon: parks[i].iconMarker
        }).addTo(mymap);
    }
  }

  // select all of the leaflet supplied class
  let markers = document.querySelectorAll(".leaflet-marker-icon");

  // loop through those elements and first assign the indexed custom class
  for (i = 0; i < markers.length; ++i) {
    markers[i].classList.add("marker_" + parks[i].parksNumber);

    // then add a click listener to each one
    markers[i].addEventListener("click", e => {

      // pull the class list
      let id = String(e.target.classList);

      // pull your unique ID from the list, be careful cause this list could 
      // change orientation,  if so loop through and find it
      let parksNumber = id.split(" ");
      parksNumber = parksNumber[parksNumber.length - 1].replace("marker_", "");

      // you have your unique identifier to then do what you want with
      search_Number_input.value = parksNumber;
      HandleSearch();
    });
  }