Echarts点击x轴获取x轴数据
需求：
如图所示，点击echart图表的x轴线或者x轴坐标，获取x轴的数据，高亮显示x轴坐标。
关键代码：
//设置x轴坐标可以点击
xAxis: [{
triggerEvent: true,
axisLabel: {
color: function (value, index) {
return value == time ? '#21aced' : '#fff';
},
clickable: true,
},
}],
let time = ""
//点击x轴线
myChart.getZr().on('click', params => {
const pointInPixel = [params.offsetX, params.offsetY]
if (myChart.containPixel('grid', pointInPixel)) {
const xIndex = myChart.convertFromPixel({ seriesIndex: 0 }, [params.offsetX, params.offsetY])[0]
time = option.xAxis[0].data[xIndex]
myChart.resize();
console.log(time)
}
})
//点击x轴坐标
myChart.on('click', 'xAxis.category', function (params, node) {
time = params.value
myChart.resize();
console.log(time)
});
完整示例：
可以到https://www.makeapie.com/editor.html测试
option = {
backgroundColor: '#080b30',
title: {
text: '哎呦,不错哦',
textStyle: {
align: 'center',
color: '#fff',
fontSize: 20,
},
top: '5%',
left: 'center',
},
tooltip: {
trigger: 'axis',
axisPointer: {
type: 'shadow'
},
confine: true
},
grid: {
top: '15%',
left: '5%',
right: '5%',
bottom: '15%',
// containLabel: true
},
xAxis: [{
type: 'category',
triggerEvent: true,//
axisLine: {
show: true
},
splitArea: {
// show: true,
color: '#f00',
lineStyle: {
color: '#f00'
},
},
axisLabel: {
color: function (value, index) {
return value == time ? '#21aced' : '#fff';
},
clickable: true,//
},
splitLine: {
show: false
},
boundaryGap: false,
data: ['2021-6-7', '2021-6-8', '2021-6-9', '2021-6-10', '2021-6-11', '2021-6-12'],
}],
yAxis: [{
type: 'value',
min: 0,
// max: 140,
splitNumber: 4,
splitLine: {
show: true,
lineStyle: {
color: 'rgba(255,255,255,0.1)'
}
},
axisLine: {
show: false,
},
axisLabel: {
show: false,
margin: 20,
textStyle: {
color: '#d1e6eb',
},
},
axisTick: {
show: false,
},
}],
series: [{
name: '注册总量',
type: 'line',
// smooth: true, //是否平滑
showAllSymbol: true,
// symbol: 'image://./static/images/guang-circle.png',
symbol: 'circle',
symbolSize: 25,
lineStyle: {
normal: {
color: "#6c50f3",
shadowColor: 'rgba(0, 0, 0, .3)',
shadowBlur: 0,
shadowOffsetY: 5,
shadowOffsetX: 5,
},
},
label: {
show: true,
position: 'top',
textStyle: {
color: '#6c50f3',
}
},
itemStyle: {
color: "#6c50f3",
borderColor: "#fff",
borderWidth: 3,
shadowColor: 'rgba(0, 0, 0, .3)',
shadowBlur: 0,
shadowOffsetY: 2,
shadowOffsetX: 2,
},
tooltip: {
show: false
},
areaStyle: {
normal: {
color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
offset: 0,
color: 'rgba(74,145,247,0.5)'
},
{
offset: 1,
color: 'rgba(74,145,247,0.01)'
}
], false),
}
},
data: [502.84, 205.97, 332.79, 281.55, 398.35, 214.02, ]
},
{
name: '注册总量',
type: 'line',
// smooth: true, //是否平滑
showAllSymbol: true,
// symbol: 'image://./static/images/guang-circle.png',
symbol: 'circle',
symbolSize: 25,
lineStyle: {
normal: {
color: "#00ca95",
shadowColor: 'rgba(0, 0, 0, .3)',
shadowBlur: 0,
shadowOffsetY: 5,
shadowOffsetX: 5,
},
},
label: {
show: true,
position: 'top',
textStyle: {
color: '#00ca95',
}
},
itemStyle: {
color: "#00ca95",
borderColor: "#fff",
borderWidth: 3,
shadowColor: 'rgba(0, 0, 0, .3)',
shadowBlur: 0,
shadowOffsetY: 2,
shadowOffsetX: 2,
},
tooltip: {
show: false
},
areaStyle: {
normal: {
color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
offset: 0,
color: 'rgba(121,249,177,0.5)'
},
{
offset: 1,
color: 'rgba(121,249,177,0.01)'
}
], false),
}
},
data: [281.55, 398.35, 214.02, 179.55, 289.57, 356.14, ],
},
]
};
let time = ""
//点击x轴线
myChart.getZr().on('click', params => {
const pointInPixel = [params.offsetX, params.offsetY]
if (myChart.containPixel('grid', pointInPixel)) {
const xIndex = myChart.convertFromPixel({ seriesIndex: 0 }, [params.offsetX, params.offsetY])[0]
time = option.xAxis[0].data[xIndex]
myChart.resize();
console.log(time)
}
})
//点击x轴坐标
myChart.on('click', 'xAxis.category', function (params, node) {
time = params.value
myChart.resize();
console.log(time)
});