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Copy path15-数据的动态更新.html
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15-数据的动态更新.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>Document</title>
</head>
<body>
<div id="main" style="height:600px;width: 900px"></div>
<button onClick="add()">增加</button>
<script src="./js/echarts.min.js"></script>
<script>
let myChart = echarts.init(document.getElementById('main'))
let data = [5, 20, 10, 15, 10, 20]
let option = {
title: {
text: '数据动态更新'
},
tooltip: {
trigger: 'axis',
axisPointer: {
label: {
// 提示器文本
show: true
}
},
position: function(point, params, dom, rect, size) {
// 位置
return [point[0], '10%']
}
},
legend: {
data: ['销量']
},
xAxis: {
data: ['衬衫', '羊毛衫', '雪纺衫', '裤子', '高跟鞋', '袜子']
},
yAxis: {},
series: [
{
name: '销量',
type: 'bar',
data: data
}
]
}
myChart.setOption(option)
function add() {
// data = data.map(v => Number.parseInt(Math.random() * 10) + v) // 无效产生的是新对象
// console.log(data)
var inc = Math.floor(Math.random() * 10)
// 改变原数据有效
// for (var i in data) {
// data[i] = data[i] + inc
// }
data.forEach((v, i) => {
data[i] = v + inc
})
console.log(data)
// option.series.data = data
console.log(option.series)
myChart.clear()
myChart.setOption(option)
}
</script>
</body>
</html>