在官网上有一个小demo，模拟异步数据加载，我稍微加了一点注释和注意事项（里面包括loading动画）
code：
<!DOCTYPE html>
<html lang="zh">
<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">
<script src="https://cdn.bootcss.com/echarts/4.2.1-rc1/echarts-en.common.min.js" type="text/javascript" charset="utf-8"></script>
<script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js" type="text/javascript" charset="utf-8"></script>
<title></title>
</head>
<body>
<div id="main" style="width: 1000px; height: 500px;"></div>
<script type="text/javascript">
function fetchData(cb) {
// 通过 setTimeout 模拟异步加载
setTimeout(function () {
cb({
categories: ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"],
data: [5, 20, 36, 10, 10, 20]
});
}, 1000);
}
var myChart = echarts.init(document.getElementById('main'));
// 初始 option
myChart.showLoading();
myChart.setOption({
title: {
text: '异步数据加载示例'
},
tooltip: {},
legend: {
data:['销量']
},
xAxis: {
data: []
},
yAxis: {},
series: [{
name: '销量',
type: 'bar',
data: []
}]
});
//传递data数据以后
fetchData(function (data) {
myChart.hideLoading();
myChart.setOption({
xAxis: {
//调用data的categories值
data: data.categories
},
series: [{
// 根据名字对应到相应的系列
name: '销量',
//调用data的data值
data: data.data
}]
});
});
</script>
</body>
</html>
还有一个数据动态更新的demo（里面方法还没看），CV就直接可以用了
code：
<!DOCTYPE html>
<html lang="zh">
<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">
<script src="https://cdn.bootcss.com/echarts/4.2.1-rc1/echarts-en.common.min.js" type="text/javascript" charset="utf-8"></script>
<script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js" type="text/javascript" charset="utf-8"></script>
<title></title>
</head>
<body>
<div id="main" style="width: 1000px; height: 500px;"></div>
<script type="text/javascript">
var base = +new Date(2014, 9, 3);
var oneDay = 24 * 3600 * 1000;
var date = [];
var data = [Math.random() * 150];
var now = new Date(base);
function addData(shift) {
now = [now.getFullYear(), now.getMonth() + 1, now.getDate()].join('/');
date.push(now);
data.push((Math.random() - 0.4) * 10 + data[data.length - 1]);
if (shift) {
date.shift();
data.shift();
}
now = new Date(+new Date(now) + oneDay);
}
for (var i = 1; i < 100; i++) {
addData();
}
var myChart = echarts.init(document.getElementById('main'));
myChart.setOption( {
xAxis: {
type: 'category',
boundaryGap: false,
data: date
},
yAxis: {
boundaryGap: [0, '50%'],
type: 'value'
},
series: [
{
name:'成交',
type:'line',
smooth:true,
symbol: 'none',
stack: 'a',
areaStyle: {
normal: {}
},
data: data
}
]
});
setInterval(function () {
addData(true);
myChart.setOption({
xAxis: {
data: date
},
series: [{
name:'成交',
data: data
}]
});
}, 500);
</script>
</body>
</html>