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Mouseover/Mouseout Events
svg = {
const svg = html`<svg id = "svg"></svg>`
const container = d3.select(svg)
container.append("circle")
.attr("r",50)
.attr("fill","cornflowerblue")
.attr("stroke","black")
.attr("cx",300)
.attr("cy",150)
.on("mouseover",function(){
const target = d3.select(this)
target.attr("fill","tomato")
})
.on("mouseout",function(){
const target = d3.select(this)
target.attr("fill","cornflowerblue")
})
return svg
}
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