vue 中，echarts的使用，简单入门

vue 中，echarts的使用，简单入门

原作者哔哩哔哩视频 感谢 多多支持
效果图

首先创建一个页面组件，创建三个div，分别来使用折线图，柱状图，扇形图

<div ref="echartLine" style="height:260px;"></div>  //折线图
 
<div ref="echartBar" style="height:200px;"></div>  	//柱状图
 
<div ref="echartFan" style="height:150px;"></div>	//扇形图

在setup中使用

import {getLineData,getBarData,getFanData} from '@/tool/echarts'
export default {
    name: "Home",
    components: { },
    setup(){
        const {proxy} = getCurrentInstance()
        // 关于echarts 表格的渲染
        function getEcharts(){
            // 折线图
            getLineData(proxy.$refs['echartLine'])
            // 柱状图
            getBarData(proxy.$refs['echartBar'])
            // 扇形图
            getFanData(proxy.$refs['echartFan'])
        }
 
        // 进入组件之后的回调
        onMounted(() => {
            getEcharts()
        })
    }

测试的echarts.js ；这里的数据都是伪造的，主要是来看看该怎么使用这些数据

import * as echarts from 'echarts';
import {reactive} from 'vue';
 
 
// 模拟数据的产生
 
// 折现图的数据*************************************************
let data = []
for(let i = 0; i < 7;i++){
    let paoject = {
        Book: Math.floor(Math.random() * 5000),
        Commodity: Math.floor(Math.random() * 5000),
        Blog: Math.floor(Math.random() * 5000),
        ShuiSanYa: Math.floor(Math.random() * 5000),
    }
    data.push(paoject)
}
const porjectDataAPI = {
    xData:['2016','2017','2018','2019','2020','2021','2022'],
    data:data
}
 
// 柱状图的数据*************************************************
let data1 = []
for(let i = 0; i < 7;i++){
    let user = {
        active: Math.floor(Math.random() * 1000),
        inertia: Math.floor(Math.random() * 1000),
    }
    data1.push(user)
}
const userDataAPI = {
    xData:['星期一','星期二','星期三','星期四','星期五','星期六','星期天'],
    data: data1
}
 
// 扇形图的数据*************************************************
let data2 = []
let xData = ['Book','Commodity','Blog','ShuiSanYa']
for(let i = 0; i < 4;i++){
    let project = {
        name: xData[i],
        value: Math.floor(Math.random() * 100),
    }
    data2.push(project)
}
let project1DataAPI = reactive({
    data:data2
})
 
// 关于echarts *************************************************
let xOptions = reactive({
    //图例颜色
    textStyle:{
        color:"#333"
    },
    grid:{
        left: "20%"
    },
    //提示框
    tooltip:{
        trigger:"axis",
    },
    xAxis:{
        type:"category",
        data:[],
        axisLine:{
            lineStyle:{
                color:"#17b3a3"
            }
        },
        axisLabel:{
            interVal:0,
            color:"#333"
        },
    },
    yAxis:[
        {
            type:"value",
            axisLine:{
                lineStyle:{
                    color:"#17b3a3"
                }
            }
        }
    ],
    color:["#ef5b9c","#1d953f","#694d9f","#ffd400"],
    series:[]
});
let pieOptions = reactive({
    tooltip:{
        trigger:"item",
    },
    color:[
        "#ef5b9c","#1d953f","#694d9f","#ffd400"
    ],
    series:[]
})
 
 
//折现图的渲染*************************************************
let porjectData = reactive({
    xData:[],
    series:[]
})
export const getLineData = (dom) => {
    porjectData.xData = porjectDataAPI.xData
    const keyArray = Object.keys(porjectDataAPI.data[0])
    const series = []
    keyArray.forEach((key) => {
        series.push({
            name:key,
            data:porjectDataAPI.data.map(item=>item[key]),
            type:'line'
        })
    })
    porjectData.series = series;
    xOptions.xAxis.data = porjectData.xData
    xOptions.series = porjectData.series
    // 进行渲染
    let Echarts = echarts.init(dom)
    Echarts.setOption(xOptions)
}
 
// 柱状图的渲染*************************************************
let userData = reactive({
    xData:[],
    series:[]
})
export const getBarData = (dom) => {
    userData.xData = userDataAPI.xData
    userData.series = [
        {
            name:"不活跃用户",
            data:userDataAPI.data.map((item) => item.inertia),
            type:"bar"
        },
        {
            name:"活跃用户",
            data:userDataAPI.data.map((item) => item.active),
            type:"bar"
        }
    ]
 
    xOptions.xAxis.data = userData.xData
    xOptions.series = userData.series
    // 进行渲染
    let Echarts = echarts.init(dom)
    Echarts.setOption(xOptions)
}
 
// 扇形图的渲染*************************************************
let project1Data = reactive({
    series:[]
})
export const getFanData = (dom) => {
    project1Data.series = [
        {
            data:project1DataAPI.data,
            type:'pie'
        }
    ]
    pieOptions.series = project1Data.series
    let Echarts = echarts.init(dom)
    Echarts.setOption(pieOptions)
}