Echarts+ajax實現多條折線圖

時間 2021-08-15

標籤 javascript css html java jquery ajax json echarts ide url 欄目 Ajax 简体版

原文原文鏈接

需求：
統計不一樣的時間段裏面，監測到的血壓數據，分別是高血壓的數據和低血壓的數據，須要使用兩條折線圖表示出來，這裏就要用到了Echarts的多條折線圖的demo了，而且使用ajax請求json數據，將請求到的數據渲染到圖表裏面進行表示~~javascript

示例代碼以下:css

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
        <script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
        <script src="https://cdn.bootcss.com/echarts/4.2.1-rc1/echarts.min.js" type="text/javascript"></script>
    </head>
    <body>
        <!-- 爲ECharts準備一個具有大小(寬高)的Dom -->
        <div id="main" class="col-md-12  col-sm-12 col-xs-12" style="height: 400px;"></div>
        <script>
            // 折線圖
            $.ajax({
                url: "test.json",
                data: {},
                type: 'GET',
                success: function(data) {
                    console.log(JSON.stringify(data))
                    bloodFun(data.echatX, data.echatY, data.echatY2);
                },
            });
            
            // 血壓
            var bloodChart = echarts.init(document.getElementById('main'));
            // 指定圖表的配置項和數據
            function bloodFun(x_data, y_data, y2_data) {
                
                bloodChart.setOption({
                    title : {
                        text : ''
                    },
                    tooltip : {
                        trigger : 'axis',
                        axisPointer : {
                            type : 'cross',
                            label : {
                                backgroundColor : '#6a7985'
                            }
                        }
                    },
                    legend : {
                        y : '35px',
                        textStyle : { // 圖例文字的樣式
                            color : '#fff',
                        },
                    /* data: ['高血壓', '低血壓'] */
                    },
            
                    xAxis : {
                        splitLine : {
                            show : false
                        },
                        /* 改變x軸顏色 */
                        axisLine : {
                            lineStyle : {
                                color : '#00a2e2',
                                width : 1, // 這裏是爲了突出顯示加上的
                            }
                        },
                        type : 'category',
                        boundaryGap : false,
                        data : x_data,
                    },
                    yAxis : {
                        splitLine : {
                            show : false
                        },
                        type : 'value',
            
                        min : 0, // 就是這兩個 最小值
                        max : 'dataMax', // 最大值
                        splitNumber : 10,
                        /* 改變y軸顏色 */
                        axisLine : {
                            lineStyle : {
                                color : '#00a2e2',
                                width : 1, // 這裏是爲了突出顯示加上的
                            }
                        },
                        boundaryGap : [ 0.2, 0.2 ]
                    },
                    series : [ {
                        name : '收縮壓',
                        type : 'line',
                        symbol : 'circle', // 折線點設置爲實心點
                        symbolSize : 6, // 折線點的大小
                        itemStyle : {
                            normal : {
                                color : "#1bdaf8", // 折線點的顏色
                                lineStyle : {
                                    color : "#0d427e" // 折線的顏色
                                }
                            }
                        },
                        areaStyle : {
                            normal : {
                                color : new echarts.graphic.LinearGradient(0, 1, 0, 0, [ {
                                    offset : 0,
                                    color : "#0e4b7a" // 0% 處的顏色
                                }, {
                                    offset : 0.6,
                                    color : "#0d3f70" // 60% 處的顏色
                                }, {
                                    offset : 1,
                                    color : "#0c3367" // 100% 處的顏色
                                } ], false)
                            }
                        },
                        data : y_data
                    }, {
                        name : '舒張壓',
                        type : 'line',
                        symbol : 'circle', // 折線點設置爲實心點
                        symbolSize : 6, // 折線點的大小
                        itemStyle : {
                            normal : {
                                color : "#1bdaf8", // 折線點的顏色
                                lineStyle : {
                                    color : "#0d427e" // 折線的顏色
                                }
                            }
                        },
                        areaStyle : {
                            normal : {
                                color : new echarts.graphic.LinearGradient(0, 1, 0, 0, [ {
                                    offset : 0,
                                    color : "#0e4b7a" // 0% 處的顏色
                                }, {
                                    offset : 0.6,
                                    color : "#0d3f70" // 60% 處的顏色
                                }, {
                                    offset : 1,
                                    color : "#0c3367" // 100% 處的顏色
                                } ], false)
                            }
                        },
                        data : y2_data
                    } ]
                });
            }
       
        </script>
    </body>
</html>

jsonhtml

{
    "echatX": ["2020-11-18 00:08:36", "2020-11-18 00:18:42", "2020-11-18 00:28:46", "2020-11-18 00:38:33",
        "2020-11-18 00:48:43", "2020-11-18 00:58:36", "2020-11-18 01:08:40", "2020-11-18 01:18:36", "2020-11-18 01:28:42",
        "2020-11-18 01:38:39", "2020-11-18 01:48:45", "2020-11-18 01:58:35", "2020-11-18 02:08:34", "2020-11-18 02:18:32",
        "2020-11-18 02:28:38", "2020-11-18 02:38:37", "2020-11-18 02:48:44", "2020-11-18 02:58:49", "2020-11-18 03:08:38",
        "2020-11-18 03:18:42", "2020-11-18 03:28:35", "2020-11-18 03:38:44", "2020-11-18 03:48:35", "2020-11-18 03:58:50",
        "2020-11-18 04:08:40", "2020-11-18 04:18:46", "2020-11-18 04:28:48", "2020-11-18 04:38:46", "2020-11-18 04:48:35",
        "2020-11-18 04:58:46", "2020-11-18 05:08:38", "2020-11-18 05:18:34", "2020-11-18 05:28:46", "2020-11-18 05:38:35",
        "2020-11-18 05:48:41", "2020-11-18 05:58:38", "2020-11-18 06:08:41", "2020-11-18 06:18:49", "2020-11-18 06:28:46",
        "2020-11-18 06:38:43", "2020-11-18 06:48:40", "2020-11-18 06:58:47", "2020-11-18 07:08:36", "2020-11-18 07:18:35",
        "2020-11-18 07:28:51", "2020-11-18 07:38:45", "2020-11-18 07:48:39", "2020-11-18 07:58:42", "2020-11-18 08:08:51",
        "2020-11-18 08:18:37", "2020-11-18 08:28:43", "2020-11-18 08:38:46", "2020-11-18 08:48:54", "2020-11-18 08:58:52",
        "2020-11-18 09:08:51", "2020-11-18 09:18:36", "2020-11-18 09:28:41", "2020-11-18 09:38:42", "2020-11-18 09:48:48",
        "2020-11-18 09:58:52", "2020-11-18 10:08:48", "2020-11-18 10:18:38", "2020-11-18 10:28:49", "2020-11-18 10:38:44",
        "2020-11-18 10:48:37", "2020-11-18 11:08:49"
    ],
    "echatY": [111, 155, 143, 171, 159, 134, 123, 114, 156, 180, 131, 170, 123, 123, 129, 102, 119, 144, 180, 125, 102,
        107, 113, 131, 152, 125, 105, 162, 122, 111, 129, 128, 180, 116, 167, 141, 180, 138, 109, 144, 147, 110, 180, 123,
        120, 146, 158, 108, 126, 144, 131, 119, 111, 125, 126, 162, 131, 122, 180, 159, 138, 180, 180, 110, 167, 132
    ],
    "echatY2": [69, 73, 75, 74, 76, 79, 82, 71, 74, 73, 77, 73, 77, 82, 71, 73, 79, 76, 76, 73, 63, 76, 70, 72, 81, 68, 75,
        78, 76, 69, 76, 75, 82, 72, 81, 74, 73, 82, 68, 76, 78, 68, 78, 82, 80, 77, 75, 77, 69, 76, 77, 74, 69, 68, 74, 78,
        72, 76, 76, 76, 82, 81, 80, 68, 81, 78
    ]
}

效果大體是這樣的：java