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D3js attr method program

d3js 

<!DOCTYPE html>
<html>
   <head>
      <script type = "text/javascript" src = "https://d3js.org/d3.v4.min.js"></script>
   </head>

   <body>
      <div class = "myclass">
         Hello World!
      </div>
      
      <script>
         d3.select(".myclass").attr("style", "color: red");
      </script>
   </body>
</html>

D3js html method program

d3js 

<!DOCTYPE html>
<html>
   <head>
      <script type = "text/javascript" src = "https://d3js.org/d3.v4.min.js"></script>
   </head>

   <body>
      <div class = "myclass">
         Hello World!
      </div>
      
      <script>
         d3.select(".myclass").html("Hello World! <span>from D3.js</span>");
      </script>
   </body>
</html>

D3js Text Program

d3js 

<!DOCTYPE html>
<html>
   <head>
      <script type = "text/javascript" src = "https://d3js.org/d3.v4.min.js"></script>
   </head>

   <body>
      <div class = "myclass">
         Hello World!
      </div>
      
      <script>
         d3.select("div.myclass").append("span").text("from D3.js");
      </script>
   </body>
</html>

D3js append program

d3js 

<!DOCTYPE html>
<html>
   <head>
      <script type = "text/javascript" src = "https://d3js.org/d3.v4.min.js"></script>
   </head>

   <body>
      <div class = "myclass">
         Hello World!
      </div>
      
      <script>
         d3.select("div.myclass").append("span");
      </script>
   </body>
</html>

D3JS Selection by ID Program

d3js 

<!DOCTYPE html>
<html>
   <head>
      <script type = "text/javascript" src = "https://d3js.org/d3.v4.min.js"></script>
   </head>

   <body>
      <div id = "hello">
         Hello World!
      </div>
      
      <script>
         alert(d3.select("#hello").text());
      </script>
   </body>
</html>

D3JS Select by Class Program

d3js 

<!DOCTYPE html>
<html>
   <head>
      <script type = "text/javascript" src = "https://d3js.org/d3.v4.min.js"></script>
   </head>

   <body>
      <div class = "myclass">
         Hello World!
      </div>
      
      <script>
         alert(d3.select(".myclass").text());
      </script>
   </body>
</html>

D3JS Selection by Tag Program

d3js 

<!DOCTYPE html>
<html>
   <head>
      <script type = "text/javascript" src = "https://d3js.org/d3.v4.min.js"></script>
   </head>

   <body>
      <div>
         Hello World!    
      </div>
      
      <script>
         alert(d3.select("div").text());
      </script>
   </body>
</html>

grapg

d3js 

<!DOCTYPE html>
<meta charset="utf-8">
<style type="text/css">

svg {
  font-family: "Helvetica Neue", Helvetica;
}

.line {
  fill: none;
  stroke: #000;
  stroke-width: 2px;
}

</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>

var m = [20, 20, 30, 20],
    w = 960 - m[1] - m[3],
    h = 500 - m[0] - m[2];

var x,
    y,
    duration = 1500,
    delay = 500;

var color = d3.scale.category10();

var svg = d3.select("body").append("svg")
    .attr("width", w + m[1] + m[3])
    .attr("height", h + m[0] + m[2])
  .append("g")
    .attr("transform", "translate(" + m[3] + "," + m[0] + ")");

var stocks,
    symbols;

// A line generator, for the dark stroke.
var line = d3.svg.line()
    .interpolate("basis")
    .x(function(d) { return x(d.date); })
    .y(function(d) { return y(d.price); });

// A line generator, for the dark stroke.
var axis = d3.svg.line()
    .interpolate("basis")
    .x(function(d) { return x(d.date); })
    .y(h);

// A area generator, for the dark stroke.
var area = d3.svg.area()
    .interpolate("basis")
    .x(function(d) { return x(d.date); })
    .y1(function(d) { return y(d.price); });

d3.csv("stocks.csv", function(data) {
  var parse = d3.time.format("%b %Y").parse;

  // Nest stock values by symbol.
  symbols = d3.nest()
      .key(function(d) { return d.symbol; })
      .entries(stocks = data);

  // Parse dates and numbers. We assume values are sorted by date.
  // Also compute the maximum price per symbol, needed for the y-domain.
  symbols.forEach(function(s) {
    s.values.forEach(function(d) { d.date = parse(d.date); d.price = +d.price; });
    s.maxPrice = d3.max(s.values, function(d) { return d.price; });
    s.sumPrice = d3.sum(s.values, function(d) { return d.price; });
  });

  // Sort by maximum price, descending.
  symbols.sort(function(a, b) { return b.maxPrice - a.maxPrice; });

  var g = svg.selectAll("g")
      .data(symbols)
    .enter().append("g")
      .attr("class", "symbol");

  setTimeout(lines, duration);
});

function lines() {
  x = d3.time.scale().range([0, w - 60]);
  y = d3.scale.linear().range([h / 4 - 20, 0]);

  // Compute the minimum and maximum date across symbols.
  x.domain([
    d3.min(symbols, function(d) { return d.values[0].date; }),
    d3.max(symbols, function(d) { return d.values[d.values.length - 1].date; })
  ]);

  var g = svg.selectAll(".symbol")
      .attr("transform", function(d, i) { return "translate(0," + (i * h / 4 + 10) + ")"; });

  g.each(function(d) {
    var e = d3.select(this);

    e.append("path")
        .attr("class", "line");

    e.append("circle")
        .attr("r", 5)
        .style("fill", function(d) { return color(d.key); })
        .style("stroke", "#000")
        .style("stroke-width", "2px");

    e.append("text")
        .attr("x", 12)
        .attr("dy", ".31em")
        .text(d.key);
  });

  function draw(k) {
    g.each(function(d) {
      var e = d3.select(this);
      y.domain([0, d.maxPrice]);

      e.select("path")
          .attr("d", function(d) { return line(d.values.slice(0, k + 1)); });

      e.selectAll("circle, text")
          .data(function(d) { return [d.values[k], d.values[k]]; })
          .attr("transform", function(d) { return "translate(" + x(d.date) + "," + y(d.price) + ")"; });
    });
  }

  var k = 1, n = symbols[0].values.length;
  d3.timer(function() {
    draw(k);
    if ((k += 2) >= n - 1) {
      draw(n - 1);
      setTimeout(horizons, 500);
      return true;
    }
  });
}

function horizons() {
  svg.insert("defs", ".symbol")
    .append("clipPath")
      .attr("id", "clip")
    .append("rect")
      .attr("width", w)
      .attr("height", h / 4 - 20);

  var color = d3.scale.ordinal()
      .range(["#c6dbef", "#9ecae1", "#6baed6"]);

  var g = svg.selectAll(".symbol")
      .attr("clip-path", "url(#clip)");

  area
      .y0(h / 4 - 20);

  g.select("circle").transition()
      .duration(duration)
      .attr("transform", function(d) { return "translate(" + (w - 60) + "," + (-h / 4) + ")"; })
      .remove();

  g.select("text").transition()
      .duration(duration)
      .attr("transform", function(d) { return "translate(" + (w - 60) + "," + (h / 4 - 20) + ")"; })
      .attr("dy", "0em");

  g.each(function(d) {
    y.domain([0, d.maxPrice]);

    d3.select(this).selectAll(".area")
        .data(d3.range(3))
      .enter().insert("path", ".line")
        .attr("class", "area")
        .attr("transform", function(d) { return "translate(0," + (d * (h / 4 - 20)) + ")"; })
        .attr("d", area(d.values))
        .style("fill", function(d, i) { return color(i); })
        .style("fill-opacity", 1e-6);

    y.domain([0, d.maxPrice / 3]);

    d3.select(this).selectAll(".line").transition()
        .duration(duration)
        .attr("d", line(d.values))
        .style("stroke-opacity", 1e-6);

    d3.select(this).selectAll(".area").transition()
        .duration(duration)
        .style("fill-opacity", 1)
        .attr("d", area(d.values))
        .each("end", function() { d3.select(this).style("fill-opacity", null); });
  });

  setTimeout(areas, duration + delay);
}

function areas() {
  var g = svg.selectAll(".symbol");

  axis
      .y(h / 4 - 21);

  g.select(".line")
      .attr("d", function(d) { return axis(d.values); });

  g.each(function(d) {
    y.domain([0, d.maxPrice]);

    d3.select(this).select(".line").transition()
        .duration(duration)
        .style("stroke-opacity", 1)
        .each("end", function() { d3.select(this).style("stroke-opacity", null); });

    d3.select(this).selectAll(".area")
        .filter(function(d, i) { return i; })
      .transition()
        .duration(duration)
        .style("fill-opacity", 1e-6)
        .attr("d", area(d.values))
        .remove();

    d3.select(this).selectAll(".area")
        .filter(function(d, i) { return !i; })
      .transition()
        .duration(duration)
        .style("fill", color(d.key))
        .attr("d", area(d.values));
  });

  svg.select("defs").transition()
      .duration(duration)
      .remove();

  g.transition()
      .duration(duration)
      .each("end", function() { d3.select(this).attr("clip-path", null); });

  setTimeout(stackedArea, duration + delay);
}

function stackedArea() {
  var stack = d3.layout.stack()
      .values(function(d) { return d.values; })
      .x(function(d) { return d.date; })
      .y(function(d) { return d.price; })
      .out(function(d, y0, y) { d.price0 = y0; })
      .order("reverse");

  stack(symbols);

  y
      .domain([0, d3.max(symbols[0].values.map(function(d) { return d.price + d.price0; }))])
      .range([h, 0]);

  line
      .y(function(d) { return y(d.price0); });

  area
      .y0(function(d) { return y(d.price0); })
      .y1(function(d) { return y(d.price0 + d.price); });

  var t = svg.selectAll(".symbol").transition()
      .duration(duration)
      .attr("transform", "translate(0,0)")
      .each("end", function() { d3.select(this).attr("transform", null); });

  t.select("path.area")
      .attr("d", function(d) { return area(d.values); });

  t.select("path.line")
      .style("stroke-opacity", function(d, i) { return i < 3 ? 1e-6 : 1; })
      .attr("d", function(d) { return line(d.values); });

  t.select("text")
      .attr("transform", function(d) { d = d.values[d.values.length - 1]; return "translate(" + (w - 60) + "," + y(d.price / 2 + d.price0) + ")"; });

  setTimeout(streamgraph, duration + delay);
}

function streamgraph() {
  var stack = d3.layout.stack()
      .values(function(d) { return d.values; })
      .x(function(d) { return d.date; })
      .y(function(d) { return d.price; })
      .out(function(d, y0, y) { d.price0 = y0; })
      .order("reverse")
      .offset("wiggle");

  stack(symbols);

  line
      .y(function(d) { return y(d.price0); });

  var t = svg.selectAll(".symbol").transition()
      .duration(duration);

  t.select("path.area")
      .attr("d", function(d) { return area(d.values); });

  t.select("path.line")
      .style("stroke-opacity", 1e-6)
      .attr("d", function(d) { return line(d.values); });

  t.select("text")
      .attr("transform", function(d) { d = d.values[d.values.length - 1]; return "translate(" + (w - 60) + "," + y(d.price / 2 + d.price0) + ")"; });

  setTimeout(overlappingArea, duration + delay);
}

function overlappingArea() {
  var g = svg.selectAll(".symbol");

  line
      .y(function(d) { return y(d.price0 + d.price); });

  g.select(".line")
      .attr("d", function(d) { return line(d.values); });

  y
      .domain([0, d3.max(symbols.map(function(d) { return d.maxPrice; }))])
      .range([h, 0]);

  area
      .y0(h)
      .y1(function(d) { return y(d.price); });

  line
      .y(function(d) { return y(d.price); });

  var t = g.transition()
      .duration(duration);

  t.select(".line")
      .style("stroke-opacity", 1)
      .attr("d", function(d) { return line(d.values); });

  t.select(".area")
      .style("fill-opacity", .5)
      .attr("d", function(d) { return area(d.values); });

  t.select("text")
      .attr("dy", ".31em")
      .attr("transform", function(d) { d = d.values[d.values.length - 1]; return "translate(" + (w - 60) + "," + y(d.price) + ")"; });

  svg.append("line")
      .attr("class", "line")
      .attr("x1", 0)
      .attr("x2", w - 60)
      .attr("y1", h)
      .attr("y2", h)
      .style("stroke-opacity", 1e-6)
    .transition()
      .duration(duration)
      .style("stroke-opacity", 1);

  setTimeout(groupedBar, duration + delay);
}

function groupedBar() {
  x = d3.scale.ordinal()
      .domain(symbols[0].values.map(function(d) { return d.date; }))
      .rangeBands([0, w - 60], .1);

  var x1 = d3.scale.ordinal()
      .domain(symbols.map(function(d) { return d.key; }))
      .rangeBands([0, x.rangeBand()]);

  var g = svg.selectAll(".symbol");

  var t = g.transition()
      .duration(duration);

  t.select(".line")
      .style("stroke-opacity", 1e-6)
      .remove();

  t.select(".area")
      .style("fill-opacity", 1e-6)
      .remove();

  g.each(function(p, j) {
    d3.select(this).selectAll("rect")
        .data(function(d) { return d.values; })
      .enter().append("rect")
        .attr("x", function(d) { return x(d.date) + x1(p.key); })
        .attr("y", function(d) { return y(d.price); })
        .attr("width", x1.rangeBand())
        .attr("height", function(d) { return h - y(d.price); })
        .style("fill", color(p.key))
        .style("fill-opacity", 1e-6)
      .transition()
        .duration(duration)
        .style("fill-opacity", 1);
  });

  setTimeout(stackedBar, duration + delay);
}

function stackedBar() {
  x.rangeRoundBands([0, w - 60], .1);

  var stack = d3.layout.stack()
      .values(function(d) { return d.values; })
      .x(function(d) { return d.date; })
      .y(function(d) { return d.price; })
      .out(function(d, y0, y) { d.price0 = y0; })
      .order("reverse");

  var g = svg.selectAll(".symbol");

  stack(symbols);

  y
      .domain([0, d3.max(symbols[0].values.map(function(d) { return d.price + d.price0; }))])
      .range([h, 0]);

  var t = g.transition()
      .duration(duration / 2);

  t.select("text")
      .delay(symbols[0].values.length * 10)
      .attr("transform", function(d) { d = d.values[d.values.length - 1]; return "translate(" + (w - 60) + "," + y(d.price / 2 + d.price0) + ")"; });

  t.selectAll("rect")
      .delay(function(d, i) { return i * 10; })
      .attr("y", function(d) { return y(d.price0 + d.price); })
      .attr("height", function(d) { return h - y(d.price); })
      .each("end", function() {
        d3.select(this)
            .style("stroke", "#fff")
            .style("stroke-opacity", 1e-6)
          .transition()
            .duration(duration / 2)
            .attr("x", function(d) { return x(d.date); })
            .attr("width", x.rangeBand())
            .style("stroke-opacity", 1);
      });

  setTimeout(transposeBar, duration + symbols[0].values.length * 10 + delay);
}

function transposeBar() {
  x
      .domain(symbols.map(function(d) { return d.key; }))
      .rangeRoundBands([0, w], .2);

  y
      .domain([0, d3.max(symbols.map(function(d) { return d3.sum(d.values.map(function(d) { return d.price; })); }))]);

  var stack = d3.layout.stack()
      .x(function(d, i) { return i; })
      .y(function(d) { return d.price; })
      .out(function(d, y0, y) { d.price0 = y0; });

  stack(d3.zip.apply(null, symbols.map(function(d) { return d.values; }))); // transpose!

  var g = svg.selectAll(".symbol");

  var t = g.transition()
      .duration(duration / 2);

  t.selectAll("rect")
      .delay(function(d, i) { return i * 10; })
      .attr("y", function(d) { return y(d.price0 + d.price) - 1; })
      .attr("height", function(d) { return h - y(d.price) + 1; })
      .attr("x", function(d) { return x(d.symbol); })
      .attr("width", x.rangeBand())
      .style("stroke-opacity", 1e-6);

  t.select("text")
      .attr("x", 0)
      .attr("transform", function(d) { return "translate(" + (x(d.key) + x.rangeBand() / 2) + "," + h + ")"; })
      .attr("dy", "1.31em")
      .each("end", function() { d3.select(this).attr("x", null).attr("text-anchor", "middle"); });

  svg.select("line").transition()
      .duration(duration)
      .attr("x2", w);

  setTimeout(donut,  duration / 2 + symbols[0].values.length * 10 + delay);
}

function donut() {
  var g = svg.selectAll(".symbol");

  g.selectAll("rect").remove();

  var pie = d3.layout.pie()
      .value(function(d) { return d.sumPrice; });

  var arc = d3.svg.arc();

  g.append("path")
      .style("fill", function(d) { return color(d.key); })
      .data(function() { return pie(symbols); })
    .transition()
      .duration(duration)
      .tween("arc", arcTween);

  g.select("text").transition()
      .duration(duration)
      .attr("dy", ".31em");

  svg.select("line").transition()
      .duration(duration)
      .attr("y1", 2 * h)
      .attr("y2", 2 * h)
      .remove();

  function arcTween(d) {
    var path = d3.select(this),
        text = d3.select(this.parentNode.appendChild(this.previousSibling)),
        x0 = x(d.data.key),
        y0 = h - y(d.data.sumPrice);

    return function(t) {
      var r = h / 2 / Math.min(1, t + 1e-3),
          a = Math.cos(t * Math.PI / 2),
          xx = (-r + (a) * (x0 + x.rangeBand()) + (1 - a) * (w + h) / 2),
          yy = ((a) * h + (1 - a) * h / 2),
          f = {
            innerRadius: r - x.rangeBand() / (2 - a),
            outerRadius: r,
            startAngle: a * (Math.PI / 2 - y0 / r) + (1 - a) * d.startAngle,
            endAngle: a * (Math.PI / 2) + (1 - a) * d.endAngle
          };

      path.attr("transform", "translate(" + xx + "," + yy + ")");
      path.attr("d", arc(f));
      text.attr("transform", "translate(" + arc.centroid(f) + ")translate(" + xx + "," + yy + ")rotate(" + ((f.startAngle + f.endAngle) / 2 + 3 * Math.PI / 2) * 180 / Math.PI + ")");
    };
  }

  setTimeout(donutExplode, duration + delay);
}

function donutExplode() {
  var r0a = h / 2 - x.rangeBand() / 2,
      r1a = h / 2,
      r0b = 2 * h - x.rangeBand() / 2,
      r1b = 2 * h,
      arc = d3.svg.arc();

  svg.selectAll(".symbol path")
      .each(transitionExplode);

  function transitionExplode(d, i) {
    d.innerRadius = r0a;
    d.outerRadius = r1a;
    d3.select(this).transition()
        .duration(duration / 2)
        .tween("arc", tweenArc({
          innerRadius: r0b,
          outerRadius: r1b
        }));
  }

  function tweenArc(b) {
    return function(a) {
      var path = d3.select(this),
          text = d3.select(this.nextSibling),
          i = d3.interpolate(a, b);
      for (var key in b) a[key] = b[key]; // update data
      return function(t) {
        var a = i(t);
        path.attr("d", arc(a));
        text.attr("transform", "translate(" + arc.centroid(a) + ")translate(" + w / 2 + "," + h / 2 +")rotate(" + ((a.startAngle + a.endAngle) / 2 + 3 * Math.PI / 2) * 180 / Math.PI + ")");
      };
    }
  }

  setTimeout(function() {
    svg.selectAll("*").remove();
    svg.selectAll("g").data(symbols).enter().append("g").attr("class", "symbol");
    lines();
  }, duration);
}

</script>

drhf

d3js 

<!-- source is https://bl.ocks.org/mbostock/4060366 -->
<!DOCTYPE html>
<htm>
<meta charset="utf-8">
<style>

.links {
  stroke: #000;
  stroke-opacity: 0.2;
}

.polygons {
  fill: none;
  stroke: #000;
}

.polygons :first-child {
  fill: #f00;
}

.sites {
  fill: #000;
  stroke: #fff;
}

.sites :first-child {
  fill: #fff;
}

</style>
<body>
<svg width="960" height="500"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>

var svg = d3.select("svg").on("touchmove mousemove", moved),
    width = +svg.attr("width"),
    height = +svg.attr("height");

var sites = d3.range(100)
    .map(function(d) { return [Math.random() * width, Math.random() * height]; });

var voronoi = d3.voronoi()
    .extent([[-1, -1], [width + 1, height + 1]]);

var polygon = svg.append("g")
    .attr("class", "polygons")
  .selectAll("path")
  .data(voronoi.polygons(sites))
  .enter().append("path")
    .call(redrawPolygon);

var link = svg.append("g")
    .attr("class", "links")
  .selectAll("line")
  .data(voronoi.links(sites))
  .enter().append("line")
    .call(redrawLink);

var site = svg.append("g")
    .attr("class", "sites")
  .selectAll("circle")
  .data(sites)
  .enter().append("circle")
    .attr("r", 2.5)
    .call(redrawSite);

function moved() {
  sites[0] = d3.mouse(this);
  redraw();
}

function redraw() {
  var diagram = voronoi(sites);
  polygon = polygon.data(diagram.polygons()).call(redrawPolygon);
  link = link.data(diagram.links()), link.exit().remove();
  link = link.enter().append("line").merge(link).call(redrawLink);
  site = site.data(sites).call(redrawSite);
}

function redrawPolygon(polygon) {
  polygon
      .attr("d", function(d) { return d ? "M" + d.join("L") + "Z" : null; });
}

function redrawLink(link) {
  link
      .attr("x1", function(d) { return d.source[0]; })
      .attr("y1", function(d) { return d.source[1]; })
      .attr("x2", function(d) { return d.target[0]; })
      .attr("y2", function(d) { return d.target[1]; });
}

function redrawSite(site) {
  site
      .attr("cx", function(d) { return d[0]; })
      .attr("cy", function(d) { return d[1]; });
}

</script>
</body>
</html>

Online D3JS Editor

d3js 

<!-- source is https://bl.ocks.org/mbostock/4060366 -->
<!DOCTYPE html>
<htm>
<meta charset="utf-8">
<style>

.links {
  stroke: #000;
  stroke-opacity: 0.2;
}

.polygons {
  fill: none;
  stroke: #000;
}

.polygons :first-child {
  fill: #f00;
}

.sites {
  fill: #000;
  stroke: #fff;
}

.sites :first-child {
  fill: #fff;
}

</style>

<body>
<svg width="960" height="500"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>

var svg = d3.select("svg").on("touchmove mousemove", moved),
    width = +svg.attr("width"),
    height = +svg.attr("height");

var sites = d3.range(100)
    .map(function(d) { return [Math.random() * width, Math.random() * height]; });

var voronoi = d3.voronoi()
    .extent([[-1, -1], [width + 1, height + 1]]);

var polygon = svg.append("g")
    .attr("class", "polygons")
  .selectAll("path")
  .data(voronoi.polygons(sites))
  .enter().append("path")
    .call(redrawPolygon);

var link = svg.append("g")
    .attr("class", "links")
  .selectAll("line")
  .data(voronoi.links(sites))
  .enter().append("line")
    .call(redrawLink);

var site = svg.append("g")
    .attr("class", "sites")
  .selectAll("circle")
  .data(sites)
  .enter().append("circle")
    .attr("r", 2.5)
    .call(redrawSite);

function moved() {
  sites[0] = d3.mouse(this);
  redraw();
}

function redraw() {
  var diagram = voronoi(sites);
  polygon = polygon.data(diagram.polygons()).call(redrawPolygon);
  link = link.data(diagram.links()), link.exit().remove();
  link = link.enter().append("line").merge(link).call(redrawLink);
  site = site.data(sites).call(redrawSite);
}

function redrawPolygon(polygon) {
  polygon
      .attr("d", function(d) { return d ? "M" + d.join("L") + "Z" : null; });
}

function redrawLink(link) {
  link
      .attr("x1", function(d) { return d.source[0]; })
      .attr("y1", function(d) { return d.source[1]; })
      .attr("x2", function(d) { return d.target[0]; })
      .attr("y2", function(d) { return d.target[1]; });
}

function redrawSite(site) {
  site
      .attr("cx", function(d) { return d[0]; })
      .attr("cy", function(d) { return d[1]; });
}

</script>
</body>
</html>

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