Random_circle_example

inlet.js

var svg = d3.select("svg")

var circle = svg.append("circle")

circle.attr("cx",500)
.attr("cy",300)
.attr("r",87)
.attr("fill","#ff6575")
.attr("stroke","#606060")
.attr("stroke-width",35)

circle.on("mouseover",function(){
  selected = d3.select(this);
  
  var initialSize = selected.attr("r");
   
  selected
  .attr("r",parseInt(initialSize,10)+50);
})

circle.on("mouseout",function(){
  selected = d3.select(this);
  
  var initialSize = selected.attr("r");
   
  selected
  .attr("r",parseInt(initialSize,10)-50);
})