Moment.js - 我正在解析日期，但它仍然抱怨

Question

Deprecation warning: moment construction falls back to js Date. This is discouraged and will be removed in upcoming major release. Please refer to http://momentjs.com/guides/#/warnings/js-date/ for more info. Arguments: [object Object]

據我所知，我正在根據解析文檔解析日期。

有什么建議么？

function graphTitleGenerator(data) {
  var formats = {
    sameDay: '[Today]',
    nextDay: '[Tomorrow]',
    nextWeek: 'dddd',
    lastDay: '[Yesterday]',
    lastWeek: 'MM/DD/YYYY',
    sameElse: 'MM/DD/YYYY'
  }
  var today = new Date();
  var refDate =  (today.getMonth()+1) + '-' + today.getDate()
    + '-' + today.getFullYear();
  var graphTitle = moment(data.date, 'MM-DD-YYYY').calendar(refDate, formats);
  return graphTitle;
}

Answer 1

嘗試格式 - 'MD-YYYY'，因為月份和日期是單個數字，並且您不是前綴0。

Answer 2

您的代碼中的問題是refDate變為： '9-4-2016'並且這不是已知的格式。 因此，對.calendar()的調用會拋出該錯誤。

所以，我建議您將代碼更改為：

function dateToMDY(date) {
    var d = date.getDate();
    var m = date.getMonth() + 1;
    var y = date.getFullYear();
    return '' + (m <= 9 ? '0' + m : m) + '-' + (d <= 9 ? '0' + d : d) + '-' + y; 
}

function graphTitleGenerator(data) {
  var formats = { 
    sameDay: '[Today]',
    nextDay: '[Tomorrow]',
    nextWeek: 'dddd',
    lastDay: '[Yesterday]',
    lastWeek: 'MM/DD/YYYY',
    sameElse: 'MM/DD/YYYY'
  }
  var today = new Date();
  var refDate = dateToMDY(today);
  var graphTitle = moment(data.date, 'MM-DD-YYYY').calendar(refDate, formats);
  return graphTitle;
}

Answer 3

當您調用日歷時，它將接受refDate的時刻對象。 從您想要的那一刻開始，只需一個月，您的代碼可以編寫如下：

function graphTitleGenerator(data) {
  var formats = { 
    sameDay: '[Today]',
    nextDay: '[Tomorrow]',
    nextWeek: 'dddd',
    lastDay: '[Yesterday]',
    lastWeek: 'MM/DD/YYYY',
    sameElse: 'MM/DD/YYYY'
  }

  var graphTitle = moment(data.date, 'MM-DD-YYYY').calendar(moment().add(1, month), formats);
  return graphTitle;
}