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异步数据加载示例

2022-02-10 20:33:42 作者：互联网

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>异步数据加载</title>

</head>
<body>

<div id="main" style="width:600px;height:300px;"></div>
<script src="js/echarts.js"></script>
<script>
    var myChart = echarts.init(document.getElementById('main'));

    function fetchData(f) {
        //模拟异步加载
        setTimeout(function () {
            f({
                categories:["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"],
                data:[5,10,25,20,6,8]
            });
        },3000);
    }
    option = {
        title:{
            text:'异步数据加载'
        },
        tooltip:{},
        legend:{
            data:['销量']
        },
        xAxis:{
            data:[]
        },
        yAxis:{},
        series:[{
            name:'销量',
            type:'bar',
            data:[]
        }]
    };
    //加载动画显示
    myChart.showLoading();
    myChart.setOption(option);
    fetchData(function (data) {
        myChart.hideLoading();
        myChart.setOption({
            xAxis:{
                data:data.categories
            },
            series:[{
                name:'销量',
                data:data.data
            }]
        });
    });
</script>
</body>
</html>

上述代码中使用的数据放在data包下的data.json中

{
  "categories": ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"],
  "data": [5,10,25,20,6,8]
}

标签：function,异步,示例,myChart,data,categories,加载
来源： https://www.cnblogs.com/dzwj/p/15880687.html