for循环+echart渲染多个图(vue为例)
for循环+echart渲染多个图(vue为例)
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1、项目全局安装echarts
npm install echarts --save
2、在需要for循环渲染多个图表的.vue组件中引入echarts
import * as echarts from "echarts";
3、写一个用于装图表的盒子(需要有宽高,或者100%继承父盒子,如果不指定宽高,图表无法撑开这个盒子)
//devlist是我自己定义的一个数组,这个数组长度是2,那么里面的内容就渲染两次,
.echart_specific是一个大盒子,用于循环devlist里面的内容
.specificechart是用于装echart的盒子(有大小的盒子!!!)
<div class="echart_specific" v-for="(item, index) of devlist" :key="index">
<div class="specificechart" ref="specific"></div>
</div>
4、用函数渲染echart图表(直接在函数里面画echart)
//画图
draw_specific() {
var specificEchart = document.getElementsByClassName("specificechart");
for (var i = 0; i < specificEchart.length; i++) {
var myChart = echarts.init(specificEchart[i]);
var option = {
title: {
text: "Referer of a Website",
subtext: "Fake Data",
left: "center",
},
tooltip: {
trigger: "item",
},
legend: {
orient: "vertical",
left: "left",
},
series: [{
name: "Access From",
type: "pie",
radius: "50%",
data: [{
value: 1048,
name: "Search Engine",
}, {
value: 735,
name: "Direct",
}, {
value: 580,
name: "Email",
}, {
value: 484,
name: "Union Ads",
}, {
value: 300,
name: "Video Ads",
}, ],
emphasis: {
itemStyle: {
shadowBlur: 10,
shadowOffsetX: 0,
shadowColor: "rgba(0, 0, 0, 0.5)",
},
},
}, ],
};
myChart.setOption(option);
}
},
5、调用渲染echart图表的函数
mounted() {
this.draw_specific();
},
6、效果图
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