参考「画线类库」设计。
相关文章:https://www.youquant.com/digest-topic/9159
var registerInfo = {} var chart = null var arrCfg = [] function updateSeriesIdx() { var index = 0 var map = {} _.each(arrCfg, function(cfg) { _.each(cfg.series, function(series) { var key = cfg.name + "|" + series.name map[key] = index index++