d3 pulse / blink

반복적으로 수행하는것에는..

recursive_transitions가 핵심인가..?

selection.transition()             .duration(400)             .attr("stroke-width", 2)             .attr("r", 8)             .ease('sin-in')             .transition()             .duration(800)             .attr('stroke-width', 3)             .attr("r", 12)             .ease('bounce-in')             .each("end", recursive_transitions);

[링크 : https://bl.ocks.org/whitews/3073773f5f1fd58226ee]