javascript - How to find a d3.js plot element by its connected data? -


i have d3.js plot made array of objects, such as:

svg.selectall(".circ").data(dataarr) // dataarr array of objects     .enter().append("circle")     .attr("cy", function (d) {         return d.y     })     .attr("cx", function (d) {         return d.x     })     .attr("r", elemsize / 2)     .on("dblclick", function (d, i) {         itemwasclicked(d,i); // function handle double click     }

in mentioned itemwasclicked(d,i) routine (where d data of clicked element , i index of in array dataarr) need find actual svg element clicked , change color.

how find d3.js element data attached it? not want, unless necessary, use attaching/searching id element. if faster or there no way otherwise.

inside of event handler this direct reference actioned element.

see selection.on documentation:

the specified listener invoked in same manner other operator functions, being passed current datum d , index i, this context current dom element.

so can simply:

.on("dblclick", function (d, i) {     changecolorof(this); }

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