echarts--legend 强制换行： '\n'

legend: {
    itemWidth: 10,
    itemHeight: 10,
    //itemGap:40,
    //data:['门禁','道闸','门锁','车位锁'],
    data:[
        {name:'社区通行次数',icon:'circle'},
        {name:'写字楼通行次数',icon:'circle'}, '\n',  //legend强制换行
        {name:'社区通行人数',icon:'circle'},
        {name:'写字楼通行人数',icon:'circle'}
    ],
    left: 0,
    bottom: 0,
    textStyle: {
        color: '#1AA1EF',
        fontSize: 12
    }
}