Question

我正在使用AM Charts，我需要在类别字段上显示SUN，MON，TUE等日名，但我无法做到。我能够显示日期数字，但没有名字。请帮助。

提前致谢!!!!

Answer 1

AmCharts.formatDate(new Date(2016,4,21), "EEE, DD MMM YYYY");

上午图

Day of the month:
D = 7 (one or two digits)
DD = 07 (always two digits)  
Day of week:
E = 2 (single digit day of week)  
EE = 02 (two-digit day of week)  
EEE = Tue (3-letter abbreviation of the literal representation of the day of week)   
EEEE = Tuesday (full day of week name)

了解更多信息https://www.amcharts.com/tutorials/formatting-dates/

如果是图表

AmCharts.formatDate([new Date(2016,4,21)],shortDayNames);

它用于日期名称的简短版本数组，用于格式化日期

（但仅当categoryAxis.parseDates设置为true时才有效）

Answer 2

您需要在categoryAxis上使用dateFormats。如果您有每日数据，则可能只需要覆盖＆＃34; DD＆＃34;的格式：

"categoryAxis": {
  // ...
  "dateFormats": [ {
    "period": "fff",
    "format": "JJ:NN:SS"
  }, {
    "period": "ss",
    "format": "JJ:NN:SS"
  }, {
    "period": "mm",
    "format": "JJ:NN"
  }, {
    "period": "hh",
    "format": "JJ:NN"
  }, {
    // overriding date format for daily data
    "period": "DD",
    "format": "EEE"
  }, {
    "period": "WW",
    "format": "MMM DD"
  }, {
    "period": "MM",
    "format": "MMM"
  }, {
    "period": "YYYY",
    "format": "YYYY"
  } ]
}

在AM Chart上显示日期名称而不是日期编号

2 个答案: