一、下载ECharts的js库

下载地址：http://echarts.baidu.com/download.html

由于我们对体积无要求，所以我们采用了完整版本，功能齐全，在项目中，我们只需要像普通的 JavaScript 库一样用 script 标签引入即可。

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <!-- 引入 ECharts 文件 -->
    <script src="echarts.min.js"></script>
</head>
</html>

二、绘制项目质量报表

根据需求，我们期望在绘制出如下的报表：

在绘图前我们需要为 ECharts 准备一个具备高宽的 DOM 容器。

<body>
    <!-- 为 ECharts 准备一个具备大小（宽高）的 DOM -->
    <div id="echarts-line-chart" style="width: 600px;height:400px;"></div>
</body>

然后就可以通过 echarts.init 方法初始化一个 echarts 实例并通过 setOption 方法生成一个统计图，下面是完整代码：

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//初始化图表
var lineChart = echarts.init(document.getElementById("echarts-line-chart"));
//加载数据时显示loading动画
lineChart.showLoading();
//通过Ajax异步加载数据
$.get('/gerrit/project').done(function (data) {
    lineChart.hideLoading();
    var xData = function () {
        var data = [];
        for (var i = 1; i < 15; i++) {
            data.push(i + "-项目");
        }
        return data;
    }();
    var lineoption = {
        backgroundColor: "#344b58",
        "title": {
            "text": "项目质量统计图",
            "subtext": "BUG占比分析",
            x: "4%",
 
            textStyle: {
                color: '#fff',
                fontSize: '22'
            },
            subtextStyle: {
                color: '#90979c',
                fontSize: '16',
 
            },
        },
        //提示框设置
        //formatter为提示框浮层内容格式器，支持字符串模板和回调函数两种形式。模板变量有 {a}, {b}，{c}，{d}，{e}，分别表示系列名，数据名，数据值等
        "tooltip": {
            formatter: "{b0}<br><span style='display:inline-block;margin-right:5px;border-radius:10px;width:9px;height:9px;background-color:rgba(255,144,128,1)'></span>{a0} : {c0}<br><span style='display:inline-block;margin-right:5px;border-radius:10px;width:9px;height:9px;background-color:rgba(0,191,183,1)'></span>{a1} : {c1}<br><span style='display:inline-block;margin-right:5px;border-radius:10px;width:9px;height:9px;background-color:rgba(252,230,48,1)'></span>{a2} : {c2}%",
            "trigger": "axis",
            "axisPointer": {
                "type": "shadow",
                textStyle: {
                    color: "#fff"
                }
 
            },
        },
        toolbox: {
            show: true,
            feature: {
                saveAsImage: {show: true}
            }
        },
        "grid": {
            "borderWidth": 0,
            "top": 110,
            "bottom": 95,
            textStyle: {
                color: "#fff"
            }
        },
        "legend": {
            x: '4%',
            top: '11%',
            textStyle: {
                color: '#90979c',
            },
            "data": ['Change总数', 'Bug总数']
        },
 
 
        "calculable": true,
        "xAxis": [{
            "type": "category",
            "axisLine": {
                lineStyle: {
                    color: '#90979c'
                }
            },
            "splitLine": {
                "show": false
            },
            "axisTick": {
                "show": false
            },
            "splitArea": {
                "show": false
            },
            "axisLabel": {
                "interval": 0,
 
            },
            "data": xData,
        }],
 
        //多行Y轴设置，数据中通过yAxisIndex选择 index从0开始
        "yAxis": [
            {
                "type": "value",
                "name": "总数",
                "splitLine": {
                    "show": false
                },
                "axisLine": {
                    lineStyle: {
                        color: '#90979c'
                    }
                },
                "axisTick": {
                    "show": false
                },
                "axisLabel": {
                    "interval": 0,
 
                },
                "splitArea": {
                    "show": false
                },
            },
 
            {
                type: 'value',
                name: "占比（%）",
                min: 0,
                max: 100,
                position: 'right',
                "splitLine": {
                    "show": false
                },
                "axisLine": {
                    lineStyle: {
                        color: '#90979c'
                    }
                },
                "axisTick": {
                    "show": false
                },
                "axisLabel": {
                    "interval": 0,
 
                },
                "splitArea": {
                    "show": false
                },
            },
 
        ],
 
        //数据区域缩放组件
        "dataZoom": [{
            "show": true,
            "height": 30,
            "xAxisIndex": [
                0
            ],
            bottom: 30,
            "start": 0,
            "end": 80,
            handleIcon: 'path://M306.1,413c0,2.2-1.8,4-4,4h-59.8c-2.2,0-4-1.8-4-4V200.8c0-2.2,1.8-4,4-4h59.8c2.2,0,4,1.8,4,4V413z',
            handleSize: '110%',
            handleStyle: {
                color: "#d3dee5",
 
            },
            textStyle: {
                color: "#fff"
            },
            borderColor: "#90979c"
 
 
        },
            {
                "type": "inside",
                "show": true,
                "height": 15,
                "start": 1,
                "end": 35
            }],
 
        //系列列表。每个系列通过 type 决定自己的图表类型
        //stack表示数据堆叠，同个类目轴上系列配置相同的stack值后，后一个系列的值会在前一个系列的值上相加。
        "series": [{
            "name": "Change总数",
            "type": "bar",
            "stack": "总量",
            "barMaxWidth": 35,
            "barGap": "10%",
            "itemStyle": {
                "normal": {
                    "color": "rgba(255,144,128,1)",
                    "label": {
                        "show": true,
                        "textStyle": {
                            "color": "#fff"
                        },
                        //数据显示位置
                        "position": "insideTop",
                        //数据显示格式
                        formatter: function (p) {
                            return p.value > 0 ? (p.value) : '';
                        }
                    }
                }
            },
            "data": [
                709,
                1917,
                2455,
                2610,
                1719,
                1433,
                1544,
                3285,
                5208,
                3372,
                2484,
                4078
            ],
        },
 
            {
                "name": "Bug总数",
                "type": "bar",
                "stack": "总量",
                "itemStyle": {
                    "normal": {
                        "color": "rgba(0,191,183,1)",
                        "barBorderRadius": 0,
                        "label": {
                            "show": true,
                            "position": "top",
                            formatter: function (p) {
                                return p.value > 0 ? (p.value) : '';
                            }
                        }
                    }
                },
                "data": [
                    327,
                    1776,
                    507,
                    1200,
                    800,
                    482,
                    204,
                    1390,
                    1001,
                    951,
                    381,
                    220
                ]
            },
            {
                "name": "占比",
                "type": "line",
                "yAxisIndex": 1,
                symbolSize: 10,
                symbol: 'circle',
                "itemStyle": {
                    "normal": {
                        "color": "rgba(252,230,48,1)",
                        "barBorderRadius": 0,
                        "label": {
                            "show": true,
                            "position": "top",
                            formatter: function (p) {
                                return p.value > 0 ? (p.value) + '%' : '';
                            }
                        }
                    }
                },
                "data": [
                    46,
                    92,
                    20,
                    46,
                    47,
                    34,
                    13,
                    42,
                    19,
                    28,
                    15,
                    5
                ]
            },
        ]
    };
    lineChart.setOption(lineoption);
    $(window).resize(lineChart.resize);
});