hello-world/index3.html at master · ninestar09/hello-world · GitHub

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<!DOCTYPE html>
<meta charset="utf-8"
<html>
<head>
    <style>
    svg {
        width: 960px;
        height: 500px;
        border: 1px solid gray;
    }
    </style>

</head>
<body>
    <svg></svg>
    <script src="scripts/d3.js"></script>
    <script src="scripts/d3.min.js"></script>
    <script src="scripts/jquery-1.12.0.js"></script>
	<script>
       var svg = d3.select("svg");
var data = [{x:0, y:8},
  {x:10, y:22},
  {x:20, y:20},
  {x:30, y:80},
  {x:40, y:34},
  {x:50, y:54},
  {x:60, y:54},
  {x:70, y:9},
  {x:80, y:128},
  {x:90, y:12}
  ];

var line = d3.svg.line()
  .x(function(d) {
    return d.x;
  })
  .y(function(d) {
    return d.y;
  });

var tx=150;
var ty=250;
var group = svg.append("g").
attr("transform", "translate("+[tx,ty]+")")

var path = group.selectAll("path")
  .data([data])
  .enter()
  .append("path")
	.attr({
		d: line,
		fill: "none",
		stroke: "#0a0a0a"
})

var text = group.append("text")
.attr("transform","translate("+[-1,-13]+")")
.text(line(data))

svg.on("click", function(){
  var p = d3.mouse(this);
  data.push({
    x:p[0]-tx,
    y:p[1]-ty
  })

path.attr("d", line)

text.text(line(data))
})

    </script>
<body>
</html>