vue3使用echarts

1、创建vue3项目

npm create vue vue-demo

2、下载echarts

pnpm i echarts

3、引入echarts

import { ref, onMounted, watch } from "vue"
import * as echarts from 'echarts'

4、创建echarts实例

<div ref="chart" style="width: 100%;height: 300px;"></div>

let mChart = null;
const target = ref(null)

onMounted(() => {
    mChart = echarts.init(target.value, 'dark')
    renderChart()
})

5、构建options对象

const options = {
        legend: {
            data: ['Java', 'C', 'C++', 'Python', 'C#']
        },
        grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
        },
        toolbox: {
            feature: {
                saveAsImage: {}
            }
        },
        xAxis: {
            type: 'category',
            boundaryGap: false,
            data: ['1989', '1999', '2009', '2019']
        },
        yAxis: {
            type: 'value'
        },
        series: [
            {
                name: 'Java',
                type: 'line',
                stack: 'Total',
                data: [120, 132, 101, 134, 90, 230, 210]
            },
            {
                name: 'C',
                type: 'line',
                stack: 'Total',
                data: [220, 182, 191, 234, 290, 330, 310]
            },
            {
                name: 'C++',
                type: 'line',
                stack: 'Total',
                data: [150, 232, 201, 154, 190, 330, 410]
            },
            {
                name: 'Python',
                type: 'line',
                stack: 'Total',
                data: [320, 332, 301, 334, 390, 330, 320]
            },
            {
                name: 'C#',
                type: 'line',
                stack: 'Total',
                data: [820, 932, 901, 934, 1290, 1330, 1320]
            }
        ]
    }

6、通过实例setOption(option)方法配置

 mChart.setOption(options)

7、监听浏览器变化，重新渲染图表

window.addEventListener('resize', () => {
        myChart.resize()
})

8、完整代码

<template>
    <div class="wrapper">
        <div class="header">vue3使用echarts</div>
        <div ref="target" style="width: 100%;height: 100%;"></div>
    </div>
</template>

<script setup>
import { ref, onMounted, watch } from "vue"
import * as echarts from 'echarts'

// 1. 创建echarts实例
let mChart = null;
const target = ref(null)

onMounted(() => {
    mChart = echarts.init(target.value, 'dark')
    renderChart()
})
// 2. 构建 option 配置对象
const renderChart = () => {
    const options = {
        legend: {
            data: ['Java', 'C', 'C++', 'Python', 'C#']
        },
        grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
        },
        toolbox: {
            feature: {
                saveAsImage: {}
            }
        },
        xAxis: {
            type: 'category',
            boundaryGap: false,
            data: ['1989', '1999', '2009', '2019']
        },
        yAxis: {
            type: 'value'
        },
        series: [
            {
                name: 'Java',
                type: 'line',
                stack: 'Total',
                data: [120, 132, 101, 134, 90, 230, 210]
            },
            {
                name: 'C',
                type: 'line',
                stack: 'Total',
                data: [220, 182, 191, 234, 290, 330, 310]
            },
            {
                name: 'C++',
                type: 'line',
                stack: 'Total',
                data: [150, 232, 201, 154, 190, 330, 410]
            },
            {
                name: 'Python',
                type: 'line',
                stack: 'Total',
                data: [320, 332, 301, 334, 390, 330, 320]
            },
            {
                name: 'C#',
                type: 'line',
                stack: 'Total',
                data: [820, 932, 901, 934, 1290, 1330, 1320]
            }
        ]
    }

    // 3. 通过 实例.setOptions(option) 方法加载配置
    mChart.setOption(options)
    window.addEventListener('resize', () => {
        myChart.resize()
    })
}

</script>
<style lang="less" scoped>
.wrapper {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;

    .header {
        height: 50px;
        background: #4398d1;
        color: #fff;
        font-size: 20px;
        display: flex;
        align-items: center;
    }

    .target {
        flex: 1;
    }
}
</style>

9、echarts官网(Apache ECharts)