ECharts折线图渲染json格式数据（格式为对象）

我会带着你远行 2023-01-21 04:29 18阅读 0赞

<!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>
            
            <div id="main" class="col-md-12  col-sm-12 col-xs-12" style="height: 400px;"></div>
            <script>
                // 折线图
                $.ajax({
                    url: "test.json",
                    data: {},
                    type: 'GET',
                    success: function(data) {
                        console.log(JSON.stringify(data))
                        hrFun(data.echatX, data.echatY);
                    },
                });
                // 心率
                var hrChart = echarts.init(document.getElementById("main"));
                function hrFun(x_data, y_data) {
                    hrChart.setOption({
                        color: ['#3398DB'],
                        tooltip: {
                            trigger: 'axis',
                            axisPointer: { // 坐标轴指示器，坐标轴触发有效
                                type: 'shadow' // 默认为直线，可选为：'line' | 'shadow'
                            }
                        },
                        legend: {
                            data: ['心率值']
                        },
                        grid: {
                            left: '3%',
                            right: '20%',
                            bottom: '20%',
                            containLabel: true
                        },
                        xAxis: [{
                            type: 'category',
                            data: x_data,
                        }],
                        yAxis: [{ // 纵轴标尺固定
                            type: 'value',
                            scale: true,
                            name: '心率值',
                            min : 0, // 就是这两个 最小值
                            max : 'dataMax', // 最大值
                            splitNumber: 20,
                            boundaryGap: [0.2, 0.2]
                        }],
                        series: [{
                            name: '心率',
                            type: 'line',
                            data: y_data
                        }]
                    }, true);
                }
            </script>
        </body>
    </html>

json数据

{
    	"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", "2020-11-18 11:18:49"
    	],
    	"echatY": [80, 112, 90, 91, 104, 99, 107, 106, 121, 105, 106, 109, 102, 79, 81, 64, 70, 89, 108, 86, 62, 60, 74, 71,
    		112, 89, 81, 117, 90, 62, 90, 100, 99, 104, 103, 93, 113, 114, 74, 86, 115, 80, 119, 113, 96, 104, 111, 98, 93, 101,
    		93, 101, 60, 78, 79, 93, 69, 98, 124, 104, 108, 100, 104, 74, 100, 102, 75
    	],
    	"echatY2": []
    }

![图片.png][.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDc2MzU2OQ_size_16_color_FFFFFF_t_70]

[.png]: /images/20221020/3c6cb80d07d64539b51e687fe2e42899.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDc2MzU2OQ_size_16_color_FFFFFF_t_70]: /images/20221020/e6aaad19218e42c4a6e61acdcce6d146.png