实现echarts 渐变仪表盘
效果预览：
<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'));
var colors=["#e00005","#e6a900","#00c05a"];
var fontColor="#0089fa";
var data=[70,2];
var fontSize=13;
var percent=data[0]/(data[0]+data[1])*100;
var option = {
backgroundColor:"#05233b",
series: [
{
type: 'gauge',
name: '外层辅助',
radius: '86%',
pointer: {
show: false
},
detail: {
show: true,
offsetCenter: [-30,'90%'],
fontSize:15,
color: '#fff'
},
data: [{
value: 70,name:"在线："
}],
title: {
show: true,
offsetCenter: [-60, '90%'],
textStyle: {
color: fontColor,
}
},
axisLine: {
show: true,
lineStyle: {
color: [
[1, '#0a80d5'],
],
width: 5,
opacity: 1
}
},
axisTick: {
show: false
},
splitLine: {
show: true,
length: 20,
lineStyle: {
color: '#051932',
width: 0,
type: 'solid',
},
},
axisLabel: {
show: false
}
},
{
name: '最内层线',
type: 'gauge',
radius: '30%',
center: ['50%', '50%'],
startAngle: 0,
endAngle: 359.999,
axisLine: {
show: false,
lineStyle: {
opacity: 0,
}
},
splitLine: {
show: false,
lineStyle: {
opacity: 0
}
},
axisLabel: {
show: false
},
axisTick: {
length: 2,
lineStyle: {
color: fontColor,
width: 2,
type: 'solid'
}
},
detail: {
show: true,
offsetCenter: [80,'258%'],
fontSize:15,
color: '#fff'
},
data: [{
value: data[1],name:"离线："
}],
title: {
show: true,
offsetCenter: [50, '258%'],
textStyle: {
color: fontColor,
}
},
pointer: {
show: false
}
},
{
name: '内层数据刻度',
type: 'gauge',
radius: '79%',
min: 0,
max: 100,
center: ['50%', '50%'],
axisLine: {
lineStyle: {
width: 30,
color: [
[0.1, colors[0]],
[0.3, new echarts.graphic.LinearGradient(
0, 1, 0, 0,
[{
offset: 0,
color: colors[0]
}, {
offset: 0.8,
color: colors[1]
}]
)],
[0.7, colors[1]],
[0.9, new echarts.graphic.LinearGradient(
0, 1, 0, 0,
[{
offset: 0,
color: colors[2]
}, {
offset: 0.6,
color: colors[1]
}]
)],
[1, colors[2]]
],
}
},
splitLine: {
length: 15,
lineStyle: {
width: 2,
color: '#ffffff'
}
},
axisTick: {
lineStyle: {
width: 1,
color: '#ffffff'
}
},
axisLabel: {
color: fontColor,
distance: 20,
fontSize: fontSize,
},
detail: {
show: true,
offsetCenter: ['0','60%'],
color: '#fff',
formatter: function (value) {
return value.toFixed(1)+"%";
},
fontSize:19
},
itemStyle: {
normal: {
color: 'rgb(0,191,255)'
}
},
data: [{
value: percent,name:"在线率"
}],
silent: false,
title:{
offsetCenter : [0, '75%'],//设置在线率位置
color:fontColor,
}
},
]
};
// 使用刚指定的配置项和数据显示图表。
myChart.setOption(option);
</script>
</body>