javascript - Position of tooltip in d3.js -


i have map circle in real coordinate. put real coordinate on map use function:

map.latlngtolayerpoint ([x, y]);

when zoomed, circle moves, relocate, within zoom trigger:

map.on ('zoomend', function () {  })

i recalculate position of circle. when click on circle, tooltip displayed. if zoom, tooltip not next circle , moves. how can fix this?.

 //moving tooltip  var div= d3.select("body").append("div") .attr("class", "tooltip") .style("opacity", 0);  //i put circle in coordinate var coordenadas=map.latlngtolayerpoint([coordinates[0].lat,coordinates[0].long]); svg.append('circle').attr("cx",position.x) .attr("cy", position.y) .attr("r", 30) .style("fill",'red') .style('pointer-events', 'all') .attr("class",'circulo_mapa') .on("click", function(element){  //tooltip     div.style("opacity", .9)     .html('message')     .style("left", (d3.event.pagex) + "px")     .style("top", (d3.event.pagey - 28) + "px");  })   //trigger on zoom map.on('zoomend', function() {   //position of circle when zoomed executed  d3.selectall(".circulo_mapa").attr("cx",function(d,i){  var position=map.latlngtolayerpoint([coordinates[0].lat,coordinates[0].long]);    return position.x;  }).attr("cy",function(d,i){ var position=map.latlngtolayerpoint([coordinates[0].lat,coordinates[0].long]);         return position.y;  }) });

https://plnkr.co/edit/ujpmc2nox5avrf81u2i5?p=preview


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