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常见的数据可视化库:
- D3.js 目前 Web 端评价最高的 Javascript 可视化工具库(入手难)
- ECharts.js 百度出品的一个开源 Javascript 数据可视化库
- Highcharts.js 国外的前端数据可视化库,非商用免费,被许多国外大公司所使用
- AntV 蚂蚁金服全新一代数据可视化解决方案 等等
- Highcharts 和 Echarts 就像是 Office 和 WPS 的关系
ECharts,一个使用 JavaScript 实现的开源可视化库,可以流畅的运行在 PC 和移动设备上,兼容当前绝大部分浏览器(IE8/9/10/11,Chrome,Firefox,Safari等),底层依赖矢量图形库 [ZRender](https://github.com/ecomfe/zrender),提供直观,交互丰富,可高度个性化定制的数据可视化图官网地址: https://www.echartsjs.com/zh/index.html 表.
Echarts官网地址: https://www.echartsjs.com/zh/index.html
举个例子:
- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <meta http-equiv="X-UA-Compatible" content="IE=edge">
- <meta name="viewport" content="width=device-width, initial-scale=1.0">
- <title>Document</title>
- <style>
- .box{
- width: 300px;
- height: 300px;
- background-color: aliceblue;
- }
- </style>
- </head>
- <body>
- <!-- 第二步: 准备一个具备大小的DOM容器 -->
- <div class="box"></div>
- <!-- 第一步: 下载并引入echarts.js文件 -->
- <script src="js/echarts.min.js"></script>
- <script>
- // 第三步: 初始化实例对象 echarts.init(dom容器)
- var myChart = echarts.init(document.querySelector(".box"))
- // 第四步: 指定图标的配置项和数据
- var option = {
- title: {
- text: 'ECharts 入门示例'
- },
- tooltip: {},
- legend: {
- data: ['销量']
- },
- xAxis: {
- data: ['衬衫', '羊毛衫', '雪纺衫', '裤子', '高跟鞋', '袜子']
- },
- yAxis: {},
- series: [
- {
- name: '销量',
- type: 'bar',
- data: [5, 20, 36, 10, 10, 20]
- }
- ]
- };
- // 第五步: 把配置项给实例对象
- myChart.setOption(option)
- </script>
- </body>
- </html>

需要了解的主要配置:series、xAxis、yAxis、grid、tooltip、title、legend、color
注:若 series 里有 name 值,那么 legend 里的 data 可以删除。
立即执行函数的妙用:为了防止变量污染,减少命名冲突,可以采取立即执行函数的写法,因为里面的变量都是局部变量。
在html中引入echarts.min.js
- <div class="panel bar">
- <h2>柱形图</h2>
- <div class="chart">图标</div>
- </div>
-
- <script src="js/echarts.min.js"></script>
- <script src="js/index.js"></script>
- // 柱状图模块1
- (function () {
- // 1,实例化对象
- var myChart = echarts.init(document.querySelector(".bar .chart"))
- // 2.指定配置项与数据、
- var option = {
- color: ["#2f89cf"],
- tooltip: {
- trigger: 'axis',
- axisPointer: {
- // 坐标轴指示器,坐标轴触发有效
- type: 'shadow', //默认为line直线
- }
- },
- // 修改图表大小
- grid: {
- left: '0%',
- top: "10px",
- right: '0%',
- bottom: '4%',
- containLabel: true
- },
- xAxis: [
- {
- type: 'category',
- data: ["旅游", "教育", "游戏", "医疗", "电商", "社交", "金融"],
- axisTick: {
- alignWithLabel: true
- },
- // 修改刻度标签相关样式
- axisLabel: {
- color: "rgba(255,255,255,.6)",
- fontSize: "12"
- },
- // 不显示坐标轴的线
- axisLine: {
- show: false
- }
- }
- ],
- yAxis: [
- {
- type: 'value',
- // 修改刻度标签相关样式
- axisLabel: {
- color: "rgba(255,255,255,.6)",
- fontSize: "12"
- },
- // y轴线条改为2px
- axisLine: {
- lineStyle: {
- color: "rgba(255,255,255,.1)",
- width: 2
- }
- },
- // y轴分割线的样式
- splitLine: {
- lineStyle: {
- color: "rgba(255,255,255,.1)"
- }
- }
- }
- ],
- series: [
- {
- name: 'Direct',
- type: 'bar',
- barWidth: '35%',
- data: [200, 300, 300, 900, 1500, 1200, 600],
- itemStyle: {
- // 修改柱子圆角
- barBorderRadius: 5
- }
- }
- ]
- };
- // 3. 把配置项给实例对象
- myChart.setOption(option)
- // 4. 让图标跟随屏幕自动的去自适应
- window.addEventListener("resize",function(){
- myChart.resize()
- })
- })();

- <div class="panel line2">
- <h2>折线图</h2>
- <div class="chart">图标</div>
- </div>
- (function () {
- var myChart = echarts.init(document.querySelector(".line2 .chart"))
- var option = {
- tooltip: {
- trigger: 'axis',
- },
- legend: {
- top: "0%",
- textStyle: {
- color: "rgba(255, 255, 255, .5)",
- fontSize: 12
- },
- data: ['Email', 'Union Ads', 'Video Ads', 'Direct', 'Search Engine']
- },
- grid: {
- left: "10",
- top: "30",
- right: "10",
- bottom: "10",
- containLabel: true
- },
- xAxis: [
- {
- type: 'category',
- boundaryGap: false,
- data: ["01", "02", "03", "04", "05", "06", "07", "08", "09", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "26", "28", "29", "30"],
- axisLabel: {
- textStyle: {
- color: "rgba(255,255,255,.6)",
- fontSize: 12
- }
- },
- axisLine: {
- lineStyle: {
- color: "rgba(255,255,255,.2)"
- }
- }
- }
- ],
- yAxis: [
- {
- type: 'value',
- axisTick: {
- show: false
- },
- axisLine: {
- lineStyle: {
- color: "rgba(255,255,255,.1)"
- },
- },
- axisLabel: {
- textStyle: {
- color: "rgba(255,255,255,.6)",
- fontSize: 12
- }
- },
- splitLine: {
- lineStyle: {
- color: "rgba(255,255,255,.1)"
- }
- }
-
- }
- ],
- series: [
- {
- name: 'Email',
- type: 'line',
- smooth: true,
- emphasis: {
- focus: 'series'
- },
- data: [30, 40, 30, 40, 30, 40, 30, 60, 20, 40, 30, 40, 30, 40, 30, 40, 30, 60, 20, 40, 30, 40, 30, 40, 30, 40, 20, 60, 50, 40],
- lineStyle: { //单独修改当前线条的样式
- color: "#0184d5",
- width: 2
- },
- areaStyle: { //填充颜色设置
- // color:"pink"
- // 渐变色
- color: new echarts.graphic.LinearGradient(
- 0,
- 0,
- 0,
- 1,
- [
- {
- offset: 0,
- color: "rgba(1, 132, 213, 0.4)" // 渐变色的起始颜色
- },
- {
- offset: 1,
- color: "rgba(1, 132, 213, 0.1)" // 渐变线的结束颜色
- }
- ],
- false
- ),
- shadowColor: "rgba(0, 0, 0, 0.1)"
- },
- symbol: "circle", //设置拐点
- symbolSize: 8, //设置拐点大小
- showSymbol: false, //开始不显示拐点,鼠标经过才显示
- itemStyle: { //设置拐点颜色
- color: "#0184d5",
- borderColor: "rgba(221, 220, 107, .1)",
- borderWidth: 12
- },
- },
- {
- name: 'Union Ads',
- type: 'line',
- areaStyle: {},
- smooth: true,
- areaStyle: {
- lineStyle: {
- normal: {
- color: "#00d887",
- width: 2
- }
- },
- },
- areaStyle: {
- normal: {
- color: new echarts.graphic.LinearGradient(
- 0,
- 0,
- 0,
- 1,
- [
- {
- offset: 0,
- color: "rgba(0, 216, 135, 0.4)"
- },
- {
- offset: 0.8,
- color: "rgba(0, 216, 135, 0.1)"
- }
- ],
- false
- ),
- shadowColor: "rgba(0, 0, 0, 0.1)"
- }
- },
- symbol: "circle", // 设置拐点 小圆点
- symbolSize: 5, // 拐点大小
- itemStyle: { // 设置拐点颜色以及边框
- color: "#00d887",
- borderColor: "rgba(221, 220, 107, .1)",
- borderWidth: 12
- },
- showSymbol: false, // 开始不显示拐点, 鼠标经过显示
-
- emphasis: {
- focus: 'series'
- },
- data: [130, 10, 20, 40, 30, 40, 80, 60, 20, 40, 90, 40, 20, 140, 30, 40, 130, 20, 20, 40, 80, 70, 30, 40, 30, 120, 20, 99, 50, 20],
- },
- ]
- }
- myChart.setOption(option)
- window.addEventListener("resize", function () {
- myChart.resize()
- })
- })();

- <div class="panel pie2">
- <h2>饼形图</h2>
- <div class="chart">图标</div>
- </div>
- (function () {
- var myChart = echarts.init(document.querySelector(".pie2 .chart"))
- var option = {
- color: ['#006cff', '#60cda0', '#ed8884', '#ff9f7f', '#0096ff', '#9fe6b8', '#32c5e9', '#1d9dff'],
- tooltip: {
- trigger: 'item',
- formatter: '{a} <br/>{b} : {c} ({d}%)'
- },
- legend: {
- // left: 'center',
- bottom: '0%',
- itemWidth:10,
- itemHeight:10,
- textStyle:{
- color:"rgba(255,255,255,.5)",
- fontSize:10
- }
- },
- series: [
- {
- name: '地区分布',
- type: 'pie',
- radius: ["10%", "70%"],
- center: ['50%', '50%'],
- roseType: 'radius',
- itemStyle: {
- borderRadius: 5
- },
- data: [
- { value: 20, name: '云南' },
- { value: 26, name: '北京' },
- { value: 24, name: '山东' },
- { value: 25, name: '河北' },
- { value: 20, name: '江苏' },
- { value: 25, name: '浙江' },
- { value: 30, name: '四川' },
- { value: 42, name: '湖北' }
- ],
- label: {
- fontSize: 10 //图形文字
- },
- labelLine: { //连接文字与图像的线条
- length: 6, //连接图形的线条
- length2: 8 //连接文字的线条
- }
- }
- ]
- };
- myChart.setOption(option)
- window.addEventListener("resize", function () {
- myChart.resize()
- })
- })()

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