html, body {

    width: 100%;

    height: 100%;

    margin: 0;

    padding: 0;

}

button {

    margin: 10px 0 0 10px;

}

#container {

    position: absolute;

    width: 100%;

    top: 35px;

    bottom: 0;

}

anychart.onDocumentReady(function () {

​

    // create data

    data = [

      {x: "John Doe", value: 1},

      {x: "Richard Roe", value: 1},

      {x: "Larry Loe", value: 1},

      {x: "Marta Moe", value: 1},

      {x: "Jane Poe", value: 1},

      {x: "Norma Noe", value: 1},

      {x: "William Woe", value: 1}

    ];

​

    newData = data.slice(0, 4);

​

    // create a chart and set the data

    chart = anychart.pie(newData);

​

    // set the chart title

    chart.title("Legend: Size (Expandable)\n\n" +

                "Max Height = 30%, Max Width = 50%");

​

    // set the maximum height and width of the legend

    chart.legend().maxHeight("30%");

    chart.legend().maxWidth("50%");

​

    // set the layout of the legend

    chart.legend().itemsLayout("horizontal-expandable")

​

    // set the container id

    chart.container("container");

​

    // initiate drawing the chart

    chart.draw();

});

​

// add items to the chart

function addItem() {

  newData = newData.concat(data[newData.length]);

  chart.data(newData);

  if (newData.length == data.length) {

    document.getElementById("addItemButton").disabled = true;

  }

  document.getElementById("removeItemButton").disabled = false;

}

​

// remove items from the chart

function removeItem() { 

  newData = newData.slice(0, newData.length - 1);

  chart.data(newData);

  if (newData.length == 1) {

    document.getElementById("removeItemButton").disabled = true;

  }

  document.getElementById("addItemButton").disabled = false;

}