Echarts无数据时只显示文字不显示动画

只需要在option中加入如下代码即可：

noDataLoadingOption: {
                        text: '暂无数据',
                        effect: 'bubble',
                        effectOption: {
                            effect: {
                                n: 0
                            }
                        }
 },

完整Option示例代码如下：

option = {
  noDataLoadingOption: {
                        text: '暂无数据',
                        effect: 'bubble',
                        effectOption: {
                            effect: {
                                n: 0
                            }
                        }
 },
    title : {
        text: '某站点用户访问来源',
        subtext: '纯属虚构',
        x:'center'
    },
    tooltip : {
        trigger: 'item',
        formatter: "{a} <br/>{b} : {c} ({d}%)"
    },
    legend: {
        orient : 'vertical',
        x : 'left',
        data:['直接访问','邮件营销','联盟广告','视频广告','搜索引擎']
    },
    toolbox: {
        show : true,
        feature : {
            mark : {show: true},
            dataView : {show: true, readOnly: false},
            magicType : {
                show: true,
                type: ['pie', 'funnel'],
                option: {
                    funnel: {
                        x: '25%',
                        width: '50%',
                        funnelAlign: 'left',
                        max: 1548
                    }
                }
            },
            restore : {show: true},
            saveAsImage : {show: true}
        }
    },
    calculable : true,
    series : [
        {
            name:'访问来源',
            type:'pie',
            radius : '55%',
            center: ['50%', '60%'],
            data:[
                {value:335, name:'直接访问'},
                {value:310, name:'邮件营销'},
                {value:234, name:'联盟广告'},
                {value:135, name:'视频广告'},
                {value:1548, name:'搜索引擎'}
            ]
        }
    ]
};