知识点：
mixins、ref、$refs、element响应式布局
准备工作：
1、项目中安装echarts：
cnpm i echarts -S
2、在main.js中引入echarts：
import echarts from 'echarts'
// 在原型链中注册，然后在需要的页面调用：this.$echarts
Vue.prototype.$echarts = echarts实现方式：
1、普通方式：
实现该功能的单文件组件为：chart.vue
<template>
<el-row>
<el-col :xs="24" :sm="24" :md="24" :lg="12" :xl="12">
<div ref="myChart1" style="height: 300px;"></div>
</el-col>
<el-col :xs="24" :sm="24" :md="24" :lg="12" :xl="12">
<div ref="myChart2" style="height: 300px;"></div>
</el-col>
</el-row>
</template>
<script>
export default {
data() {
return {
AreaPiecesChart: null,
electricityChart: null
};
},
methods: {
drawAreaPieces() {
this.AreaPiecesChart = this.$echarts.init(
this.$refs.myChart1
);
let option = {
xAxis: {
type: "category",
boundaryGap: false
},
yAxis: {
type: "value",
boundaryGap: [0, "30%"]
},
visualMap: {
type: "piecewise",
show: false,
dimension: 0,
seriesIndex: 0,
pieces: [
{
gt: 1,
lt: 3,
color: "rgba(0, 180, 0, 0.5)"
},
{
gt: 5,
lt: 7,
color: "rgba(0, 180, 0, 0.5)"
}
]
},
series: [
{
type: "line",
smooth: 0.6,
symbol: "none",
lineStyle: {
color: "green",
5
},
markLine: {
symbol: ["none", "none"],
label: { show: false },
data: [{ xAxis: 1 }, { xAxis: 3 }, { xAxis: 5 }, { xAxis: 7 }]
},
areaStyle: {},
data: [
["2019-10-10", 200],
["2019-10-11", 400],
["2019-10-12", 650],
["2019-10-13", 500],
["2019-10-14", 250],
["2019-10-15", 300],
["2019-10-16", 450],
["2019-10-17", 300],
["2019-10-18", 100]
]
}
]
};
this.AreaPiecesChart.setOption(option);
},
drawElectricity() {
this.electricityChart = this.$echarts.init(
this.$refs.myChart2
);
let option = {
title: {
text: "一天用电量分布",
subtext: "纯属虚构"
},
tooltip: {
trigger: "axis",
axisPointer: {
type: "cross"
}
},
xAxis: {
type: "category",
boundaryGap: false,
data: [
"00:00",
"01:15",
"02:30",
"03:45",
"05:00",
"06:15",
"07:30",
"08:45",
"10:00",
"11:15",
"12:30",
"13:45",
"15:00",
"16:15",
"17:30",
"18:45",
"20:00",
"21:15",
"22:30",
"23:45"
]
},
yAxis: {
type: "value",
axisLabel: {
formatter: "{value} W"
},
axisPointer: {
snap: true
}
},
visualMap: {
show: false,
dimension: 0,
pieces: [
{
lte: 6,
color: "green"
},
{
gt: 6,
lte: 8,
color: "red"
},
{
gt: 8,
lte: 14,
color: "green"
},
{
gt: 14,
lte: 17,
color: "red"
},
{
gt: 17,
color: "green"
}
]
},
series: [
{
name: "用电量",
type: "line",
smooth: true,
data: [
300,
280,
250,
260,
270,
300,
550,
500,
400,
390,
380,
390,
400,
500,
600,
750,
800,
700,
600,
400
],
markArea: {
data: [
[
{
name: "早高峰",
xAxis: "07:30"
},
{
xAxis: "10:00"
}
],
[
{
name: "晚高峰",
xAxis: "17:30"
},
{
xAxis: "21:15"
}
]
]
}
}
]
};
this.electricityChart.setOption(option);
},
chartResize(){
let eleArr = [this.AreaPiecesChart, this.electricityChart];
for(let i = 0; i<eleArr.length; i++){
//此处定时器是为了在页面存在多个图时，resize方法的调用时间微微错开，避免明显的卡顿
setTimeout(function(){
eleArr[i].resize();
}, 200);
}
}
},
mounted() {
this.drawAreaPieces();
this.drawElectricity();
//注：此处要用addEventListener,如果用 window.onresize = function(){},如果别的组件也用了onresize事件，就容易覆盖掉此处的函数
window.addEventListener("resize", this.chartResize);
},
destroyed(){
window.removeEventListener("resize", this.chartResize);
}
};
</script>
<style scoped>
#myChart1,
#myChart2 {
height: 300px;
}
</style>2、使用mixins的方式引入：
定义一个页面Resize.vue，用来处理每一个有图表的页面添加resize , 离开时移除resize函数：
<script>
/**
* 用来处理每一个有图表的页面添加resize , 离开时移除resize函数
*/
import echarts from "echarts";
export default {
data() {
return {
doms: []
};
},
methods: {
chartResize(eleArr) {
for (let i = 0; i < eleArr.length; i++) {
setTimeout(function() {
eleArr[i].resize();
}, 200);
}
}
},
mounted() {
let _this = this;
window.addEventListener("resize", function() {
_this.chartResize(_this.doms);
});
},
destroyed() {
let _this = this;
window.removeEventListener("resize", function() {
_this.chartResize(_this.doms);
});
}
};
</script>图表页面Chart.vue中引入Resize.vue：
<template>
<el-row>
<el-col :xs="24" :sm="24" :md="24" :lg="12" :xl="12">
<div ref="myChart1" style="height: 300px;"></div>
</el-col>
<el-col :xs="24" :sm="24" :md="24" :lg="12" :xl="12">
<div ref="myChart2" style="height: 300px;"></div>
</el-col>
</el-row>
</template>
<script>
import Resize from './Resize'
export default {
mixins: [Resize],
data() {
return {
AreaPiecesChart: null,
electricityChart: null
};
},
methods: {
drawAreaPieces() {
this.AreaPiecesChart = this.$echarts.init(
this.$refs.myChart1
);
this.doms.push(this.AreaPiecesChart);
let option = {
xAxis: {
type: "category",
boundaryGap: false
},
yAxis: {
type: "value",
boundaryGap: [0, "30%"]
},
visualMap: {
type: "piecewise",
show: false,
dimension: 0,
seriesIndex: 0,
pieces: [
{
gt: 1,
lt: 3,
color: "rgba(0, 180, 0, 0.5)"
},
{
gt: 5,
lt: 7,
color: "rgba(0, 180, 0, 0.5)"
}
]
},
series: [
{
type: "line",
smooth: 0.6,
symbol: "none",
lineStyle: {
color: "green",
5
},
markLine: {
symbol: ["none", "none"],
label: { show: false },
data: [{ xAxis: 1 }, { xAxis: 3 }, { xAxis: 5 }, { xAxis: 7 }]
},
areaStyle: {},
data: [
["2019-10-10", 200],
["2019-10-11", 400],
["2019-10-12", 650],
["2019-10-13", 500],
["2019-10-14", 250],
["2019-10-15", 300],
["2019-10-16", 450],
["2019-10-17", 300],
["2019-10-18", 100]
]
}
]
};
this.AreaPiecesChart.setOption(option);
},
drawElectricity() {
this.electricityChart = this.$echarts.init(
this.$refs.myChart2
);
this.doms.push(this.electricityChart);
let option = {
title: {
text: "一天用电量分布",
subtext: "纯属虚构"
},
tooltip: {
trigger: "axis",
axisPointer: {
type: "cross"
}
},
xAxis: {
type: "category",
boundaryGap: false,
data: [
"00:00",
"01:15",
"02:30",
"03:45",
"05:00",
"06:15",
"07:30",
"08:45",
"10:00",
"11:15",
"12:30",
"13:45",
"15:00",
"16:15",
"17:30",
"18:45",
"20:00",
"21:15",
"22:30",
"23:45"
]
},
yAxis: {
type: "value",
axisLabel: {
formatter: "{value} W"
},
axisPointer: {
snap: true
}
},
visualMap: {
show: false,
dimension: 0,
pieces: [
{
lte: 6,
color: "green"
},
{
gt: 6,
lte: 8,
color: "red"
},
{
gt: 8,
lte: 14,
color: "green"
},
{
gt: 14,
lte: 17,
color: "red"
},
{
gt: 17,
color: "green"
}
]
},
series: [
{
name: "用电量",
type: "line",
smooth: true,
data: [
300,
280,
250,
260,
270,
300,
550,
500,
400,
390,
380,
390,
400,
500,
600,
750,
800,
700,
600,
400
],
markArea: {
data: [
[
{
name: "早高峰",
xAxis: "07:30"
},
{
xAxis: "10:00"
}
],
[
{
name: "晚高峰",
xAxis: "17:30"
},
{
xAxis: "21:15"
}
]
]
}
}
]
};
this.electricityChart.setOption(option);
}
},
mounted() {
this.drawAreaPieces();
this.drawElectricity();
}
};
</script>
<style scoped>
</style>3、使用Vue.prototype方式引入：
将echarts中resize图表的方法抽象成一个函数chartResize.js：
function chartResize(eleArr){
for(let i = 0; i<eleArr.length; i++){
// 定时器是为了在页面存在多个图时，resize方法的调用时间微微错开，避免明显的卡顿
setTimeout(function(){
eleArr[i].resize();
}, 200);
}
}
export {chartResize}main.js中在原型中注册chartResize函数：
import {chartResize} from './assets/chartResize.js'
// 在原型链中注册，然后在需要的页面调用：this.$chartResize()
Vue.prototype.$chartResize = chartResize在Chart.vue组件中使用：
<template>
<el-row>
<el-col :xs="24" :sm="24" :md="24" :lg="12" :xl="12">
<div ref="myChart1" style="height: 300px;"></div>
</el-col>
<el-col :xs="24" :sm="24" :md="24" :lg="12" :xl="12">
<div ref="myChart2" style="height: 300px;"></div>
</el-col>
</el-row>
</template>
<script>
export default {
data() {
return {
AreaPiecesChart: null,
electricityChart: null
};
},
methods: {
drawAreaPieces() {
this.AreaPiecesChart = this.$echarts.init(
this.$refs.myChart1
);
let option = {
xAxis: {
type: "category",
boundaryGap: false
},
yAxis: {
type: "value",
boundaryGap: [0, "30%"]
},
visualMap: {
type: "piecewise",
show: false,
dimension: 0,
seriesIndex: 0,
pieces: [
{
gt: 1,
lt: 3,
color: "rgba(0, 180, 0, 0.5)"
},
{
gt: 5,
lt: 7,
color: "rgba(0, 180, 0, 0.5)"
}
]
},
series: [
{
type: "line",
smooth: 0.6,
symbol: "none",
lineStyle: {
color: "green",
5
},
markLine: {
symbol: ["none", "none"],
label: { show: false },
data: [{ xAxis: 1 }, { xAxis: 3 }, { xAxis: 5 }, { xAxis: 7 }]
},
areaStyle: {},
data: [
["2019-10-10", 200],
["2019-10-11", 400],
["2019-10-12", 650],
["2019-10-13", 500],
["2019-10-14", 250],
["2019-10-15", 300],
["2019-10-16", 450],
["2019-10-17", 300],
["2019-10-18", 100]
]
}
]
};
this.AreaPiecesChart.setOption(option);
},
drawElectricity() {
this.electricityChart = this.$echarts.init(
this.$refs.myChart2
);
let option = {
title: {
text: "一天用电量分布",
subtext: "纯属虚构"
},
tooltip: {
trigger: "axis",
axisPointer: {
type: "cross"
}
},
xAxis: {
type: "category",
boundaryGap: false,
data: [
"00:00",
"01:15",
"02:30",
"03:45",
"05:00",
"06:15",
"07:30",
"08:45",
"10:00",
"11:15",
"12:30",
"13:45",
"15:00",
"16:15",
"17:30",
"18:45",
"20:00",
"21:15",
"22:30",
"23:45"
]
},
yAxis: {
type: "value",
axisLabel: {
formatter: "{value} W"
},
axisPointer: {
snap: true
}
},
visualMap: {
show: false,
dimension: 0,
pieces: [
{
lte: 6,
color: "green"
},
{
gt: 6,
lte: 8,
color: "red"
},
{
gt: 8,
lte: 14,
color: "green"
},
{
gt: 14,
lte: 17,
color: "red"
},
{
gt: 17,
color: "green"
}
]
},
series: [
{
name: "用电量",
type: "line",
smooth: true,
data: [
300,
280,
250,
260,
270,
300,
550,
500,
400,
390,
380,
390,
400,
500,
600,
750,
800,
700,
600,
400
],
markArea: {
data: [
[
{
name: "早高峰",
xAxis: "07:30"
},
{
xAxis: "10:00"
}
],
[
{
name: "晚高峰",
xAxis: "17:30"
},
{
xAxis: "21:15"
}
]
]
}
}
]
};
this.electricityChart.setOption(option);
}
},
computed: {
chartArr(){
return [this.AreaPiecesChart, this.electricityChart];
}
},
mounted() {
this.drawAreaPieces();
this.drawElectricity();
let _this = this;
//注：此处要用addEventListener,如果用 window.onresize = function(){},如果别的组件也用了onresize事件，就容易覆盖掉此处的函数
window.addEventListener("resize", function(){
_this.$chartResize(_this.chartArr);
});
},
destroyed(){
let _this = this;
window.removeEventListener("resize", function(){
_this.$chartResize(_this.chartArr);
});
}
};
</script>
<style scoped>
</style>