javascript - d3 get element or object under current mousepointer? -


how can object (for example node, edge, path or whatever) under mouse in d3?

i want pass mouse on part of svg , console.log element.

d3 doesn't have native method this. however, can combine d3.mouse() document.elementfrompoint() in mousemove event:

var svg = d3.select("svg");  svg.on("mousemove", function() {      var mouse = d3.mouse(this);      var elem = document.elementfrompoint(mouse[0], mouse[1]);      console.log(elem.tagname)  })
<script src="https://d3js.org/d3.v4.min.js"></script>  <svg height="150" width="500">    <rect x="50" y="20" width="150" height="100" style="fill:blue;stroke:pink;stroke-width:5;fill-opacity:0.1;stroke-opacity:0.9"/>    <ellipse cx="240" cy="50" rx="220" ry="30" style="fill:yellow"/>    <ellipse cx="220" cy="50" rx="190" ry="20" style="fill:white"/>    <circle cx="350" cy="50" r="40" stroke="black" stroke-width="3" fill="red" />    <line x1="0" y1="0" x2="200" y2="200" style="stroke:rgb(255,0,0);stroke-width:4"/>  </svg>


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