效果图：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>第一个 ECharts 实例</title>
<!-- 引入 echarts.js -->
<script src="https://cdn.staticfile.org/echarts/4.3.0/echarts.min.js"></script>
</head>
<body>
<!-- 为ECharts准备一个具备大小（宽高）的Dom -->
<div id="main" style="width: 600px;height:400px;"></div>
<script type="text/javascript">
// 基于准备好的dom，初始化echarts实例
var myChart = echarts.init(document.getElementById('main'));
option = {
tooltip: {
trigger: 'axis',
textStyle: {
fontSize: 20
},
axisPointer: {
type: 'cross',
label: {
backgroundColor: '#6a7985'
}
}
},
legend: {
top: 20,
left: "center",
itemGap: 20,
itemWidth: 20,
itemHeight: 20,
icon: "rect",
textStyle: {
fontSize: 20,
color: "#000"
},
data: ['A', 'B', 'C', 'D', 'E']
},
xAxis: {
type: 'category',
boundaryGap: false,
data: ['2010', '2011', '2012', '2013', '2014', '2015', '2016', '2017', '2018', '2019', '2020']
},
yAxis: {
type: 'value'
},
series: [
{
name: 'A',
type: 'line',
stack: 'stack_1',
areaStyle: {},
data: [320, 332, 301, 334, 390, 330, 320, 220, 321, 312, 290]
},
{
name: 'B',
type: 'line',
stack: 'stack_1',
areaStyle: {},
data: [120, 132, 101, 134, 90, 230, 210, 123, 130, 120, 100]
},
{
name: 'C',
type: 'line',
stack: 'stack_1',
areaStyle: {},
data: [220, 182, 191, 234, 290, 330, 310, 223, 212, 231, 190]
},
{
name: 'D',
type: 'line',
stack: 'stack_1',
areaStyle: {},
data: [150, 212, 201, 154, 190, 330, 410, 215, 212, 231, 150]
},
{
name: 'E',
type: 'line',
stack: 'stack_1',
areaStyle: {},
data: [820, 832, 901, 934, 1290, 1330, 1320, 1024, 901, 923, 1290]
}
]
};
// 自定义每个数据项的颜色
var colorList = [
'#ff7f50',
'#87cefa',
'#da70d6',
'#32cd32',
'#6495ed',
'#ff69b4',
'#ba55d3',
'#cd5c5c',
'#ffa500',
'#40e0d0'
];
//16进制转RGB
const colorToRGB = (color, opt) => {
let color1, color2, color3;
color = "" + color;
if (typeof color !== "string") return;
if (color.charAt(0) == "#") {
color = color.substring(1);
}
if (color.length == 3) {
color =
color[0] + color[0] + color[1] + color[1] + color[2] + color[2];
}
if (/^[0-9a-fA-F]{6}$/.test(color)) {
color1 = parseInt(color.substr(0, 2), 16);
color2 = parseInt(color.substr(2, 2), 16);
color3 = parseInt(color.substr(4, 2), 16);
return (
"rgb(" + color1 + "," + color2 + "," + color3 + "," + opt + ")"
);
}
};
option.series.forEach(function (item, index) {
item.symbol = "circle", // 取消圆点折线
item.symbolSize = 0,
item.showAllSymbol = true,
item.smooth = true,
item.lineStyle = { //区域顶部线的样式
normal: {
width: 2,
color: `${colorToRGB(`${colorList[index]}`, 1)}`
},
borderColor: "rgba(0,0,0,.4)"
},
item.itemStyle = {
normal: {
color: colorList[index % colorList.length] //图例颜色
}
};
item.areaStyle = { //堆积区域样式
normal: {
color: new echarts.graphic.LinearGradient(
0,
0,
0,
1,
[
{
offset: 0,
color: `${colorToRGB(`${colorList[index]}`, 0.6)}` // 0% 处的颜色
},
{
offset: 1,
color: `${colorToRGB(`${colorList[index]}`, 0.1)}` // 100% 处的颜色（添加渐变）
}
],
false
),
shadowColor: `${colorToRGB(`${colorList[index]}`, 0.5)}`,
shadowBlur: 20
}
};
});
// 渲染图表
myChart.setOption(option);
</script>
</body>
</html>
