解决百度Echarts图表坐标轴越界的方法

Echarts是由百度提供的数据可视化解决方案, 可以让我们快速实现功能丰富的图表,官网链接 

使用方法

1.引入echarts.min.js文件

下载echarts.min.js文件,下载地址

创建一个挂载节点

 

将数据展示到挂载节点

生成数据, 并将数据导入到option配置对象中

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
// 创建数据
var base = +new Date(1968, 9, 3);
var oneDay = 24 * 3600 * 1000;
var date = [];
 
var data = [Math.random() * 300];
 
for (var i = 1; i < 20000; i++) {
  var now = new Date(base += oneDay);
  date.push([now.getFullYear(), now.getMonth() + 1, now.getDate()].join('/'));
  data.push(Math.round((Math.random() - 0.5) * 20 + data[i - 1]));
}
 
// 创建对象option
option = {
  tooltip: {
    trigger: 'axis',
    position: function (pt) {
      return [pt[0], '10%'];
    }
  },
  title: {
    left: 'center',
    text: '大数据量面积图',
  },
  toolbox: {
    feature: {
      dataZoom: {
        yAxisIndex: 'none'
      },
      restore: {},
      saveAsImage: {}
    }
  },
  xAxis: {
    type: 'category',
    boundaryGap: false,
    data: date
  },
  yAxis: {
    type: 'value',
    boundaryGap: [0, '100%']
  },
  dataZoom: [{
    type: 'inside',
    start: 0,
    end: 10
  }, {
    start: 0,
    end: 10,
    handleIcon: 'M10.7,11.9v-1.3H9.3v1.3c-4.9,0.3-8.8,4.4-8.8,9.4c0,5,3.9,9.1,8.8,9.4v1.3h1.3v-1.3c4.9-0.3,8.8-4.4,8.8-9.4C19.5,16.3,15.6,12.2,10.7,11.9z M13.3,24.4H6.7V23h6.6V24.4z M13.3,19.6H6.7v-1.4h6.6V19.6z',
    handleSize: '80%',
    handleStyle: {
      color: '#fff',
      shadowBlur: 3,
      shadowColor: 'rgba(0, 0, 0, 0.6)',
      shadowOffsetX: 2,
      shadowOffsetY: 2
    }
  }],
  series: [
    {
      name:'模拟数据',
      type:'line',
      smooth:true,
      symbol: 'none',
      sampling: 'average',
      itemStyle: {
        color: 'rgb(255, 70, 131)'
      },
      areaStyle: {
        color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
          offset: 0,
          color: 'rgb(255, 158, 68)'
        }, {
          offset: 1,
          color: 'rgb(255, 70, 131)'
        }])
      },
      data: data
    }
  ]
};

将option添加到挂载节点

1
2
// 将option数据挂载到main节点
echarts.init(document.getElementById('main')).setOption(option);

如何防止坐标轴越界

上方图表如果展示到移动版, 坐标轴可能部分无法显示

解决方法很简单,只需在option中加一个配置项即可

1
2
3
grid:{
    containLabel: true
   },

源码:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
<!doctype html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport"
     content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Echarts-Demo</title>
  <script src="./echarts.min.js"></script>
</head>
<body>
  <div id="main" style="100%;height:400px;"></div>
  <script>
    // 创建数据
    var base = +new Date(1968, 9, 3);
    var oneDay = 24 * 3600 * 1000;
    var date = [];
 
    var data = [Math.random() * 300];
 
    for (var i = 1; i < 20000; i++) {
      var now = new Date(base += oneDay);
      date.push([now.getFullYear(), now.getMonth() + 1, now.getDate()].join('/'));
      data.push(Math.round((Math.random() - 0.5) * 20 + data[i - 1]));
    }
 
    // 创建对象option
    option = {
      tooltip: {
        trigger: 'axis',
        position: function (pt) {
          return [pt[0], '10%'];
        }
      },
      title: {
        left: 'center',
        text: '大数据量面积图',
      },
      toolbox: {
        feature: {
          dataZoom: {
            yAxisIndex: 'none'
          },
          restore: {},
          saveAsImage: {}
        }
      },
      xAxis: {
        type: 'category',
        boundaryGap: false,
        data: date
      },
      yAxis: {
        type: 'value',
        boundaryGap: [0, '100%']
      },
      dataZoom: [{
        type: 'inside',
        start: 0,
        end: 10
      }, {
        start: 0,
        end: 10,
        handleIcon: 'M10.7,11.9v-1.3H9.3v1.3c-4.9,0.3-8.8,4.4-8.8,9.4c0,5,3.9,9.1,8.8,9.4v1.3h1.3v-1.3c4.9-0.3,8.8-4.4,8.8-9.4C19.5,16.3,15.6,12.2,10.7,11.9z M13.3,24.4H6.7V23h6.6V24.4z M13.3,19.6H6.7v-1.4h6.6V19.6z',
        handleSize: '80%',
        handleStyle: {
          color: '#fff',
          shadowBlur: 3,
          shadowColor: 'rgba(0, 0, 0, 0.6)',
          shadowOffsetX: 2,
          shadowOffsetY: 2
        }
      }],
      series: [
        {
          name:'模拟数据',
          type:'line',
          smooth:true,
          symbol: 'none',
          sampling: 'average',
          itemStyle: {
            color: 'rgb(255, 70, 131)'
          },
          areaStyle: {
            color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
              offset: 0,
              color: 'rgb(255, 158, 68)'
            }, {
              offset: 1,
              color: 'rgb(255, 70, 131)'
            }])
          },
          data: data
        }
      ],
      grid:{
        containLabel: true
      }
    };
    // 将option数据挂载到main节点
    echarts.init(document.getElementById('main')).setOption(option);
 
  </script>
</body>
</html>
 
Web前端页面制作快速入门视频课程(京东前端页面可视化编写流程) attach_img
尚硅谷 HTML & CSS 核心基础教程(103集实战教学,从入门到精通)
HTML5新手培训视频教程 HTML5网页设计经典入门级视频教程
Node.JS Web全栈工程师系列课程  ...2
最新WEB前端从入门到资深专家课程全套
尚硅javascript视频(140集实战教学,从入门到精通)
Html从入门到精通轻松搞定网页设计html+css+js
JavaScript视频Jquery+Ajax视频教程合集  ...2
传智播客 Css+div 网页制作实例(2天完整版)全套教学视频
最新一站式 网页设计零基础HTML5网站布局实例视频教
[JavaScript] 轻松搞定网页设计javascript课程 韩顺平主讲 教学视频 百度网盘下载
[JavaScript] 网易云课堂web前端开发工程师视频教程 教学视频 百度网盘下载
[Html] html5+css3从入门到精通视频教程讲解 教学视频 百度网盘下载
[JavaScript] 妙味课堂JavaScript专题五部分全套视频教程 20G
React Native - 项目实战系列视频教程
React native应用开发框架基础到高级系列视频教程
原文地址:https://www.cnblogs.com/veromcae/p/10012960.html