在vue中使用echarts实现柱状图动态数据
时间: 2023-08-06 15:05:48 浏览: 209
要在Vue中使用Echarts实现柱状图动态数据,可以按照以下步骤进行:
1. 安装echarts和vue-echarts
```bash
npm install echarts --save
npm install vue-echarts --save
```
2. 在Vue组件中引入Echarts和vue-echarts
```javascript
import ECharts from 'vue-echarts/components/ECharts.vue'
import 'echarts/lib/chart/bar'
import 'echarts/lib/component/tooltip'
```
3. 在Vue组件中定义数据和配置项
```javascript
data () {
return {
chartData: {
xData: [],
yData: []
}
}
},
computed: {
chartOptions () {
return {
tooltip: {},
xAxis: {
data: this.chartData.xData
},
yAxis: {},
series: [{
name: '销量',
type: 'bar',
data: this.chartData.yData
}]
}
}
}
```
4. 在Vue组件中定义方法来更新数据
```javascript
methods: {
updateChartData () {
// 获取新数据
const newData = ...
// 更新chartData
this.chartData.xData = newData.xData
this.chartData.yData = newData.yData
}
}
```
5. 在Vue组件中使用ECharts组件并传入配置项和数据
```html
<template>
<div>
<e-charts :options="chartOptions" :data="chartData"></e-charts>
</div>
</template>
<script>
import ECharts from 'vue-echarts/components/ECharts.vue'
import 'echarts/lib/chart/bar'
import 'echarts/lib/component/tooltip'
export default {
components: {
ECharts
},
data () {
return {
chartData: {
xData: [],
yData: []
}
}
},
computed: {
chartOptions () {
return {
tooltip: {},
xAxis: {
data: this.chartData.xData
},
yAxis: {},
series: [{
name: '销量',
type: 'bar',
data: this.chartData.yData
}]
}
}
},
methods: {
updateChartData () {
// 获取新数据
const newData = ...
// 更新chartData
this.chartData.xData = newData.xData
this.chartData.yData = newData.yData
}
}
}
</script>
```
6. 在需要更新数据的时候调用方法
```html
<template>
<div>
<e-charts :options="chartOptions" :data="chartData"></e-charts>
<button @click="updateChartData">更新数据</button>
</div>
</template>
```