mouseout/mouseleave gets fired when mouse moves INSIDE the svg path element

Question

I am creating a timeline using d3 library. It have few path elements inside a parent SVG element like this:

 <path d="M0,5.26429605180997L6.078685485212741,-5.26429605180997 -6.078685485212741,-5.26429605180997Z" transform="translate(585,61)scale(0.8)" style="fill: rgb(0, 0, 0);"></path>

Note that, I am using d3's symbol type (triangle-down) to generate the path element.

Now, these elements are hooked with 2 event handlers: mouseover and mouseout to toggle the tooltip.

mouseover even works fine.

However, the mouseout event gets fired every time mouse moves within the path element; which makes the tooltip flicker rapidly as I move the mouse

I tried:- mouseleave event as well, but it shows the same behaviour I also increased the size of path element to make sure that mouse was not actually moving out of the element

Any ideas, how can I fix it?

I created JSbin here - http://jsbin.com/mivihiyi/13/edit However, I myself am not able to reproduce it there. but, it the problem persists in my software .. aaaaaaaaaaaaaaa :(

Here ismy code:

 g.each(function(d, i) {
    d.forEach( function(datum, index){
      var data = datum.times;

      g.selectAll("svg").data(data).enter()
        .append('path')
        .attr("class", "point")
        .attr("d", d3.svg.symbol().type("triangle-up"))
        .attr("transform", function(d) { return "translate(" + getXPos(d, i) + "," + getStackPosition(d, i) + ")scale(2)"
      })
      .on({
        mouseover: function(d) 
        {
          tooltip.html('I am a tooltip');
          tooltip.style("top", (d3.event.pageY - 40)+"px").style("left",(d3.event.pageX-15)+"px");
          tooltip.style("visibility", "visible");                               
        },
        mouseleave: function(d) { 
            tooltip.style("visibility", "hidden");
        }
      });

And i am initializing the tooltip at the top like this :

 var tooltip = d3.select('#timeline1')
        .append("div")
        .attr("class", "timeline-tooltip")
        .style("visibility", "hidden")
        .text("Invalid Date"); 

here is my css

.timeline-tooltip {

  color: black;
    font-size: x-small;
    border-top-width: 5px;
    border-top-color: rgb(149, 206, 254);
    border-top-style: solid;
    padding: 5px 10px 5px 10px;
    text-transform: uppercase;
    box-shadow: 2px 2px 2px rgba(105, 102, 102, 0.7);
    position: fixed;
    z-index: 10;
}

Answer 1

Just in case anyone else has this problem, finds this page and is as stupid as I am: I had the same symptoms, but then suddenly realised that I was drawing the tooltip on top of the svg element that I was trying to add the tooltip to. Net result: as soon as the tooltip was made visible, the mouseleave event fired; which is of course entirely reasonable since the mouse had just left the underlying svg element, because it was now on top of the tooltip.

Solution: make sure that the tooltip is positioned so that it cannot possibly overlap where the mouse is.

Answer 2

set the pointer-events attribute on the element to all (or some other suitable value for you)

pointer-events="all"

This will make mouseover work regardless of the fill.