DHTMLX Docs & Samples Explorer

### Colors: custom logic

Colors can be defined using function. In this sample color of bars depends on sales value, and colors of pie sectors are alternative.

Source

    <script src="../../codebase/dhtmlxchart.js" type="text/javascript"></script>
    <link rel="STYLESHEET" type="text/css" href="../../codebase/dhtmlxchart.css">
    <style>
        .dhx_chart_title{
            padding-left:3px
        }
    </style>
    <script>var data = [{
        sales: "2.9",
        year: "2000"
    }, {
        sales: "3.5",
        year: "2001"
    }, {
        sales: "3.1",
        year: "2002"
    }, {
        sales: "4.2",
        year: "2003"
    }, {
        sales: "4.5",
        year: "2004"
    }, {
        sales: "9.6",
        year: "2005"
    }, {
        sales: "7.4",
        year: "2006"
    }, {
        sales: "9.0",
        year: "2007"
    }, {
        sales: "7.3",
        year: "2008"
    }, {
        sales: "4.8",
        year: "2009"
    }];
    window.onload = function() {
        var barChart = new dhtmlXChart({
            view: "bar",
            container: "chart_container",
            value: "#sales#",
            label: "#year#",
            width: 30,
            padding: {
                bottom: 0,
                right: 0,
                left: 0;
            },
            gradient: true,
            border: false,
            color: function(obj) {
                if (obj.sales > 5)
                    return "#FF0000";
                else
                    return "#00FF00";
            }
        });
        barChart.parse(data, "json");
        var index = 1;
        var barChart2 = new dhtmlXChart({
            view: "pie",
            container: "chart_container2",
            value: "#sales#",
            label: "#year#",
            gradient: true,
            color: function(obj, ratio) {
                index++;
                if (index % 2)
                    return "#FF0000";
                return "#00FF00";
            }
        });
        barChart2.parse(data, "json");
    }</script>

    <div id="chart_container" style="width:450px;height:300px;border:1px solid #A4BED4;float:left;margin-right:20px""></div>
    <div id="chart_container2" style="width:450px;height:300px;border:1px solid #A4BED4;"></div>
    <script>var data = [{
        sales: "2.9",
        year: "2000"
    }, {
        sales: "3.5",
        year: "2001"
    }, {
        sales: "3.1",
        year: "2002"
    }, {
        sales: "4.2",
        year: "2003"
    }, {
        sales: "4.5",
        year: "2004"
    }, {
        sales: "9.6",
        year: "2005"
    }, {
        sales: "7.4",
        year: "2006"
    }, {
        sales: "9.0",
        year: "2007"
    }, {
        sales: "7.3",
        year: "2008"
    }, {
        sales: "4.8",
        year: "2009"
    }];
    var barChart = new dhtmlXChart({
        view: "bar",
        container: "chart_container",
        value: "#sales#",
        label: "#year#",
        width: 30,
        padding: {
            bottom: 0,
            right: 0,
            left: 0;
        },
        gradient: true,
        border: false,
        color: function(obj) {
            if (obj.sales > 5)
                return "#FF0000";
            else
                return "#00FF00";
        }
    });
    barChart.parse(data, "json");
    var index = 1;
    var barChart2 = new dhtmlXChart({
        view: "pie",
        container: "chart_container2",
        value: "#sales#",
        label: "#year#",
        gradient: true,
        color: function(obj, ratio) {
            index++;
            if (index % 2)
                return "#FF0000";
            return "#00FF00";
        }
    });
    barChart2.parse(data, "json");</script>