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在vue中使用Echarts利用watch做動態(tài)數(shù)據(jù)渲染操作

更新時間：2020年07月20日 08:50:20 作者：GarenWang

這篇文章主要介紹了在vue中使用Echarts利用watch做動態(tài)數(shù)據(jù)渲染操作，具有很好的參考價值，希望對大家有所幫助。一起跟隨小編過來看看吧

依舊直接上代碼～

首先安裝引入Echarts，我是直接把Echarts掛到VUE全局變量上了

//引入echarts
import Vue from 'vue';
import echarts from 'echarts';
Vue.prototype.$echarts = echarts;

<template>
 <div class="demo-container">
  <div ref="chart_wrap" class="chart_wrap"></div>
 </div>
</template>
<script>
export default {
 name: "demo",
 computed: {},
 data() {
  return {
   seriesData: []
  };
 },
 created() {},
 mounted() {
  this.initCharts();
  setTimeout(() => {
   this.seriesData.push({
    name: "銷量",
    type: "bar",
    data: [5, 20, 36, 10, 10, 20]
   });
  }, 5000);
 },
 watch: {
  seriesData(val, oldVal) {
   console.log(1111, val, oldVal);
   this.setOptions(val);
  }
 },
 methods: {
  initCharts() {
   this.chart = this.$echarts.init(this.$refs.chart_wrap);
   this.setOptions();
  },
  setOptions(series) {
   console.log(22222,this.chart,series);
   this.chart.setOption({
    title: {
     text: "ECharts 入門示例"
    },
    tooltip: {},
    legend: {
     data: ["銷量"]
    },
    xAxis: {
     data: ["襯衫", "羊毛衫", "雪紡衫", "褲子", "高跟鞋", "襪子"]
    },
    yAxis: {},
    series: series
   });
  }
 }
};
</script>
<style rel="stylesheet/scss" lang="scss" scoped>
.chart_wrap {
 height: 400px;
}
</style>

補(bǔ)充知識：echarts-循環(huán)生成圖

1、問題背景

利用for循環(huán)生產(chǎn)多個氣泡圖，并且每個氣泡都可以點(diǎn)擊

2、實(shí)現(xiàn)源碼

<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>echarts-循環(huán)生成圖</title>
		<link rel="shortcut icon" href="../js/echarts-2.2.7/doc/asset/ico/favicon.png">
		<script type="text/javascript" src="../js/echarts-2.2.7/doc/asset/js/jquery.min.js" ></script>
		<script type="text/javascript" src="../js/echarts-2.2.7/doc/example/www2/js/echarts-all.js" ></script>
		
		<style>
			body,html,#div-chart{
				width: 99%;
				height: 100%;
				font-family: "微軟雅黑";
				font-size: 12px;
			}
			.chart{
				width: 1200px;
				height: 100px;
			}
		</style>
		<script>
			$(document).ready(function(){
				buildChart();
				buildChartJS();
			});
			
			function buildChart()
			{
				$("#div-chart").empty();
				var chart = "";
				for(var i=0;i<8;i++)
				{
					chart += "<div id='chart"+i+"' class='chart'></div>"; 
				}
				$("#div-chart").append(chart);
			}
			
			function buildChartJS()
			{
				for(var i=0;i<8;i++)
				{
					var chart = document.getElementById('chart'+i); 
	        var echart = echarts.init(chart); 
	         
	        var option = {
					  legend: {
					    data:['scatter1'],
					    show:false
					  },
					  splitLine:{
					　　　　  show:false
					　　 },
					  grid:{
					    borderWidth:0
					  },
					  xAxis : [
					    {
					    	show:false,
					      type : 'value',
					      splitNumber: 2,
					      scale: true,
					      axisLine:{
					      	show:false
					      },
					      splitLine:{
							　　　　  show:false
							　　 },
							  axisTick:{
							  	 show:false
							  }
					    }
					  ],
					  yAxis : [
					    {
					    	show:false,
					      type : 'value',
					      splitNumber: 2,
					      scale: true,
					      axisLine:{
					      	show:false
					      },
					      splitLine:{
							　　　　  show:false
							　　 }
					    }
					  ],
					  series : [
					    {
					      name:'scatter1',
					      type:'scatter',
					      symbol: 'emptyCircle',
					      symbolSize: 20,
					      itemStyle : { 
					      	normal: {
					      		color:'#0068B7',
					      		label:{
					      			show: true, 
					      			position: 'inside',
							      	textStyle : {
					              fontSize : 26,
					              fontFamily : '微軟雅黑',
					              color:'#0068B7'
					            }
					      		}
					      	}
					      },
					      data: randomDataArray()
					    }
					  ]
					}; 
	         
          function eConsole(param) 
          {
          	alert(param.value);
            console.dir(param);
          }
          echart.on("click", eConsole);
	        echart.setOption(option); 
				}
			}
			
			function randomDataArray() 
			{
			  var d = [];
			  var arr = [3,5,7,9,10,1,2,4,8,6];
			  var len = 10;
			  for(var i=0;i<len;i++)
			  {
			  	d.push([i+1,0,arr[i],]);
			  }
			  
			  return d;
			}
		</script>
	</head>
	<body>
		<div id="div-chart">
			
		</div>
	</body>
</html>

3、實(shí)現(xiàn)結(jié)果