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Echarts使用总结

Echarts使用总结

作者: 热心程序猿黄帅哥 | 来源:发表于2019-01-14 10:50 被阅读0次

    1.柱状图

    function echartBar(data) {
        var charts = echarts.init(document.getElementById('articleTotal-echart'));
        var option = {
            width: 800,
            height: 180,
            grid: {
                x: 35,
                y: 24,
                borderWidth: 1
            },
            xAxis: {
                type: 'category',
                data: (function () {
                    var res = [];
                    // var len = data.length;
                    for (var i = 0, size = 10; i < size; i++) {
                        res.push({
                            value: data[i].name
                        });
                    }
                    return res;
                })(),
                axisLine: {
                    lineStyle: {
                        color: "#BAE3FF",
                    }
                },
                axisLabel: {
                    interval: 0, //横轴信息全部显示
                    formatter: function (value) {
                        var ret = ""; //拼接加\n返回的类目项  
                        var maxLength = 5; //每项显示文字个数  
                        var valLength = value.length; //X轴类目项的文字个数  
                        var rowN = Math.ceil(valLength / maxLength); //类目项需要换行的行数  
                        if (rowN > 1) //如果类目项的文字大于3,  
                        {
                            for (var i = 0; i < rowN; i++) {
                                var temp = ""; //每次截取的字符串  
                                var start = i * maxLength; //开始截取的位置  
                                var end = start + maxLength; //结束截取的位置  
                                //这里也可以加一个是否是最后一行的判断,但是不加也没有影响,那就不加吧  
                                temp = value.substring(start, end) + "\n";
                                ret += temp; //凭借最终的字符串  
                            }
                            return ret;
                        } else {
                            return value;
                        }
                    }
                }
            },
            yAxis: {
                name: "(W)",
                nameLocation: 'end',
                nameGap: 10, //与轴线间距
                type: 'value',
                axisLine: {
                    lineStyle: {
                        color: "#BAE3FF",
                    }
                },
                axisTick: {
                    show: false
                },
                splitLine: {
                    show: false
                },
                splitNumber: 4
            },
            series: [{
                data: (function () {
                    var res = [];
                    // var len = data.length;
                    for (var i = 0, size = 10; i < size; i++) {
                        res.push({
                            value: data[i].articlesCount
                        });
                    }
                    return res;
                })(),
                type: 'bar',
                barWidth: 30,
                itemStyle: {
                    normal: {
                        label: {
                            show: true, //开启显示
                            position: 'top', //在上方显示
                            textStyle: { //数值样式
                                color: "#BAE3FF",
                                fontSize: 16
                            }
                        },
                        color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [{ // 柱状图颜色渐变
                            offset: 0,
                            color: '#1F32A3'
                        }, {
                            offset: 1,
                            color: '#2376FF'
                        }]),
                    }
                },
            }]
        };
        charts.setOption(option);
    }
    
    柱状图例子
    1. 进度水球

      额外引入 echarts-liquidfill.js

    <!DOCTYPE html>
    <html lang="en">
    
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <meta http-equiv="X-UA-Compatible" content="ie=edge">
        <title>绘制水球进度</title>
        <style>
            #liquid {
                width: 100px;
                height: 100px;
            }
        </style>
    </head>
    
    <body>
        <div id="liquid"></div>
        <script src="./js/echarts4.0.3.min.js"></script>
        <script src="./js/echarts-liquidfill.js"></script>
        <script>
            var charts = echarts.init(document.getElementById("liquid"));
            var option = {
                series: [{
                    type: 'liquidFill',
                    data: [0.5], // 0~1之间百分比
                    radius: '80%',
                }]
            };
            charts.setOption(option);
        </script>
    </body>
    
    </html>
    
    绘制水球

    未完待续。。。

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