Showing Data in Rectangle on the click of circle using d3.js - d3.js

Question

I Have few circles that contain people names,I need to show their information on the click of circle in rectangle using d3.js
Below is my script
var width = 960,
height = 500;
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height)
d3.json("data.json", function (json) {
/* Define the data for the circles */
var elem = svg.selectAll("g myCircleText")
.data(json.nodes)
/*Create and place the "blocks" containing the circle and the text */
var elemEnter = elem.enter()
.append("g")
.attr("transform", function (d) { return "translate(" + d.x + ",80)" })
/*Create the circle for each block */
var circle = elemEnter.append("circle")
.attr("r", function (d) { return d.r })
.attr("stroke", "black")
.attr("fill", "white")
.on("click", function () {
var s = svg
.selectAll("circle");
s
.append("rect")
.attr("x", 100)
.attr("y", 200)
.attr("width", 200)
.attr("width", 200)
.style("fill", "red");
});
/* Create the text for each block */
elemEnter.append("text")
.attr("dx", function (d) { return -20 })
.text(function (d) { return d.label })
})
below is the json file:
{"nodes":[
{"x":80, "r":40, "label":"Sam","info":"Developer"},
{"x":200, "r":60, "label":"Pam","info":"Programmer"},
{"x":380, "r":80, "label":"Ram","info":"Architect"}
]}
Circles are being drawn with names but when I click on circles nothing is happening.
Please help.
Thanks

Answer 1

Two issues with your onclick function. First, width is set a second time instead of height:
.attr("width", 200)
.attr("width", 200)
Second, you're appending a rectangle to a circle:
var s = svg.selectAll("circle");
s.append("rect")
which isn't valid for a svg:
<circle r="60" stroke="black" fill="white">
<rect></rect>
</circle>
Instead, the rectangles should be appended to root of the svg or a g element.
Working code:
.on("click", function () {
svg.append("rect")
.attr("x", 100)
.attr("y", 200)
.attr("width", 200)
.attr("height", 200)
.style("fill", "red");
});