Google apps script 如何计算ForEach循环中具有唯一日期的行？_Google Apps Script

Google apps script 如何计算ForEach循环中具有唯一日期的行？

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Google apps script 如何计算ForEach循环中具有唯一日期的行？,google-apps-script,Google Apps Script,我目前正在尝试循环使用以下数据，并计算具有唯一日期的行数。i、 e.以下数据集的答案应为8 数据表下面是我的尝试，但是我使用的if语句只返回一个真值-不确定为什么当'date'等于'dateCheck[I-1]时它不会返回false。当我将这些值打印到日志时，它们是不同的，但是if语句仍然返回true function rowCount() { var sheet = SpreadsheetApp.getActiveSheet(); var lastRow = sheet.getLas

我目前正在尝试循环使用以下数据，并计算具有唯一日期的行数。i、 e.以下数据集的答案应为8

数据表

下面是我的尝试，但是我使用的if语句只返回一个真值-不确定为什么当'date'等于'dateCheck[I-1]时它不会返回false。当我将这些值打印到日志时，它们是不同的，但是if语句仍然返回true

function rowCount() {
  var sheet = SpreadsheetApp.getActiveSheet();
  var lastRow = sheet.getLastRow();
  var data = sheet.getRange(2,1,lastRow - 1,17).getValues();   
  var dateCheck = []
  var uniqueDates = 0
  data.forEach(function(row,i) {
    var date = row[0];
    dateCheck.push(date);
    if (date != dateCheck[i - 1]) {
    Logger.log('new date');
    uniqueDates += 1  
    }
    else { 
    Logger.log('same day');
    }     
  Logger.log(uniqueDates);  
  });
}

当您从Google电子表格中获取日期值时，它们将作为Javascript日期对象提供。不能直接比较两个对象的值，因为它们的计算结果永远不会相等

例如，如果创建两个相同的日期，并直接比较它们，如下所示：

var date1 = new Date(2020,01,01);
var date2 = new Date(2020,01,01);
if(date1 == date2){
   console.log('dates are equal');
}else{
   console.log('dates are not equal');
}

这将输出“日期不相等”

相反，您需要存储可以比较的日期的表示形式。最好的选择是使用，它返回表示日期的时间戳（以毫秒为单位）

  data.forEach(function(row,i) {
    var date = row[0];
    dateCheck.push(date.getTime());
    if (date.getTime() != dateCheck[i - 1]) {
       Logger.log('new date');
       uniqueDates += 1  
    }
    else { 
       Logger.log('same day');
    }     
  }

您在问题中提到，您正在寻找唯一的日期，但在代码中，您实际上是在识别行之间日期的更改。我假设您有按日期排序的数据，在这种情况下，您当前的代码将正常工作。但是，如果您不想对数据进行排序，或者想保证日期的唯一性，可以使用indexOf，如下所示：

    if (dateCheck.indexOf(date.getTime()) > -1) {
       Logger.log('new date');
       uniqueDates += 1  
    }

这将检查dateCheck数组中任何位置的当前日期的任何实例，而不考虑排序。请注意，我们检查它是否为>-1，因为您可以在数组的索引0处找到匹配项。

尝试以下操作：

function countUniqueDates() {
  const sr=4;
  const ss=SpreadsheetApp.getActive();
  const sh=ss.getActiveSheet();
  const rg=sh.getRange(sr,1,sh.getLastRow()-sr+1,sh.getLastColumn());
  const v=rg.getValues();
  var uA=[];
  v.forEach(function(r,i){
    var ds=Utilities.formatDate(new Date(r[0]),Session.getScriptTimeZone(),"E MMM dd, yyyy");
    if(uA.indexOf(ds)==-1) {
      uA.push(ds);
    }              
  });
  SpreadsheetApp.getUi().alert(`There are ${uA.length} dates in this sheet.`);
}

以下是我的数据：

1,2,3,4,5,6
0,1,2,3,4,5
HDR1,HDR2,HDR3,HDR4,HDR5,HDR6
Tue Feb 11 2020 06:00:00 GMT-0700 (Mountain Standard Time),1,2,3,4,5
Tue Feb 11 2020 06:20:00 GMT-0700 (Mountain Standard Time),2,3,4,5,6
Tue Feb 11 2020 06:40:00 GMT-0700 (Mountain Standard Time),3,4,5,6,7
Tue Feb 11 2020 07:00:00 GMT-0700 (Mountain Standard Time),4,5,6,7,8
Tue Feb 11 2020 07:20:00 GMT-0700 (Mountain Standard Time),5,6,7,8,9
Tue Feb 11 2020 07:40:00 GMT-0700 (Mountain Standard Time),6,7,8,9,10
Tue Feb 11 2020 08:00:00 GMT-0700 (Mountain Standard Time),7,8,9,10,11
Tue Feb 11 2020 08:20:00 GMT-0700 (Mountain Standard Time),8,9,10,11,12
Tue Feb 11 2020 08:40:00 GMT-0700 (Mountain Standard Time),9,10,11,12,13
Tue Feb 11 2020 09:00:00 GMT-0700 (Mountain Standard Time),10,11,12,13,14
Tue Feb 11 2020 09:20:00 GMT-0700 (Mountain Standard Time),11,12,13,14,15
Tue Feb 11 2020 09:40:00 GMT-0700 (Mountain Standard Time),12,13,14,15,16
Tue Feb 11 2020 10:00:00 GMT-0700 (Mountain Standard Time),13,14,15,16,17
Tue Feb 11 2020 10:20:00 GMT-0700 (Mountain Standard Time),14,15,16,17,18
Tue Feb 11 2020 10:40:00 GMT-0700 (Mountain Standard Time),15,16,17,18,19
Tue Feb 11 2020 11:00:00 GMT-0700 (Mountain Standard Time),16,17,18,19,20
Tue Feb 11 2020 11:20:00 GMT-0700 (Mountain Standard Time),17,18,19,20,21
Tue Feb 11 2020 11:40:00 GMT-0700 (Mountain Standard Time),18,19,20,21,22
Tue Feb 11 2020 12:00:00 GMT-0700 (Mountain Standard Time),19,20,21,22,23
Tue Feb 11 2020 12:20:00 GMT-0700 (Mountain Standard Time),20,21,22,23,24
Tue Feb 11 2020 12:40:00 GMT-0700 (Mountain Standard Time),21,22,23,24,25
Tue Feb 11 2020 13:00:00 GMT-0700 (Mountain Standard Time),22,23,24,25,26
Tue Feb 11 2020 13:20:00 GMT-0700 (Mountain Standard Time),23,24,25,26,27
Tue Feb 11 2020 13:40:00 GMT-0700 (Mountain Standard Time),24,25,26,27,28
Tue Feb 11 2020 14:00:00 GMT-0700 (Mountain Standard Time),25,26,27,28,29
Tue Feb 11 2020 14:20:00 GMT-0700 (Mountain Standard Time),26,27,28,29,30
Tue Feb 11 2020 14:40:00 GMT-0700 (Mountain Standard Time),27,28,29,30,31
Tue Feb 11 2020 15:00:00 GMT-0700 (Mountain Standard Time),28,29,30,31,32
Tue Feb 11 2020 15:20:00 GMT-0700 (Mountain Standard Time),29,30,31,32,33
Tue Feb 11 2020 15:40:00 GMT-0700 (Mountain Standard Time),30,31,32,33,34
Tue Feb 11 2020 16:00:00 GMT-0700 (Mountain Standard Time),31,32,33,34,35
Tue Feb 11 2020 16:20:00 GMT-0700 (Mountain Standard Time),32,33,34,35,36
Tue Feb 11 2020 16:40:00 GMT-0700 (Mountain Standard Time),33,34,35,36,37
Tue Feb 11 2020 17:00:00 GMT-0700 (Mountain Standard Time),34,35,36,37,38
Tue Feb 11 2020 17:20:00 GMT-0700 (Mountain Standard Time),35,36,37,38,39
Tue Feb 11 2020 17:40:00 GMT-0700 (Mountain Standard Time),36,37,38,39,40
Tue Feb 11 2020 18:00:00 GMT-0700 (Mountain Standard Time),37,38,39,40,41
Tue Feb 11 2020 18:20:00 GMT-0700 (Mountain Standard Time),38,39,40,41,42
Tue Feb 11 2020 18:40:00 GMT-0700 (Mountain Standard Time),39,40,41,42,43
Tue Feb 11 2020 19:00:00 GMT-0700 (Mountain Standard Time),40,41,42,43,44
Tue Feb 11 2020 19:20:00 GMT-0700 (Mountain Standard Time),41,42,43,44,45
Tue Feb 11 2020 19:40:00 GMT-0700 (Mountain Standard Time),42,43,44,45,46
Tue Feb 11 2020 20:00:00 GMT-0700 (Mountain Standard Time),43,44,45,46,47
Tue Feb 11 2020 20:20:00 GMT-0700 (Mountain Standard Time),44,45,46,47,48
Tue Feb 11 2020 20:40:00 GMT-0700 (Mountain Standard Time),45,46,47,48,49
Tue Feb 11 2020 21:00:00 GMT-0700 (Mountain Standard Time),46,47,48,49,50
Tue Feb 11 2020 21:20:00 GMT-0700 (Mountain Standard Time),47,48,49,50,51
Tue Feb 11 2020 21:40:00 GMT-0700 (Mountain Standard Time),48,49,50,51,52
Tue Feb 11 2020 22:00:00 GMT-0700 (Mountain Standard Time),49,50,51,52,53
Tue Feb 11 2020 22:20:00 GMT-0700 (Mountain Standard Time),50,51,52,53,54
Tue Feb 11 2020 22:40:00 GMT-0700 (Mountain Standard Time),51,52,53,54,55
Tue Feb 11 2020 23:00:00 GMT-0700 (Mountain Standard Time),52,53,54,55,56
Tue Feb 11 2020 23:20:00 GMT-0700 (Mountain Standard Time),53,54,55,56,57
Tue Feb 11 2020 23:40:00 GMT-0700 (Mountain Standard Time),54,55,56,57,58
Wed Feb 12 2020 00:00:00 GMT-0700 (Mountain Standard Time),55,56,57,58,59
Wed Feb 12 2020 00:20:00 GMT-0700 (Mountain Standard Time),56,57,58,59,60
Wed Feb 12 2020 00:40:00 GMT-0700 (Mountain Standard Time),57,58,59,60,61
Wed Feb 12 2020 01:00:00 GMT-0700 (Mountain Standard Time),58,59,60,61,62
Wed Feb 12 2020 01:20:00 GMT-0700 (Mountain Standard Time),59,60,61,62,63
Wed Feb 12 2020 01:40:00 GMT-0700 (Mountain Standard Time),60,61,62,63,64
Wed Feb 12 2020 02:00:00 GMT-0700 (Mountain Standard Time),61,62,63,64,65
Wed Feb 12 2020 02:20:00 GMT-0700 (Mountain Standard Time),62,63,64,65,66
Wed Feb 12 2020 02:40:00 GMT-0700 (Mountain Standard Time),63,64,65,66,67
Wed Feb 12 2020 03:00:00 GMT-0700 (Mountain Standard Time),64,65,66,67,68
Wed Feb 12 2020 03:20:00 GMT-0700 (Mountain Standard Time),65,66,67,68,69
Wed Feb 12 2020 03:40:00 GMT-0700 (Mountain Standard Time),66,67,68,69,70
Wed Feb 12 2020 04:00:00 GMT-0700 (Mountain Standard Time),67,68,69,70,71
Wed Feb 12 2020 04:20:00 GMT-0700 (Mountain Standard Time),68,69,70,71,72
Wed Feb 12 2020 04:40:00 GMT-0700 (Mountain Standard Time),69,70,71,72,73
Wed Feb 12 2020 05:00:00 GMT-0700 (Mountain Standard Time),70,71,72,73,74
Wed Feb 12 2020 05:20:00 GMT-0700 (Mountain Standard Time),71,72,73,74,75
Wed Feb 12 2020 05:40:00 GMT-0700 (Mountain Standard Time),72,73,74,75,76
Wed Feb 12 2020 06:00:00 GMT-0700 (Mountain Standard Time),73,74,75,76,77
Wed Feb 12 2020 06:20:00 GMT-0700 (Mountain Standard Time),74,75,76,77,78
Wed Feb 12 2020 06:40:00 GMT-0700 (Mountain Standard Time),75,76,77,78,79
Wed Feb 12 2020 07:00:00 GMT-0700 (Mountain Standard Time),76,77,78,79,80
Wed Feb 12 2020 07:20:00 GMT-0700 (Mountain Standard Time),77,78,79,80,81
Wed Feb 12 2020 07:40:00 GMT-0700 (Mountain Standard Time),78,79,80,81,82
Wed Feb 12 2020 08:00:00 GMT-0700 (Mountain Standard Time),79,80,81,82,83
Wed Feb 12 2020 08:20:00 GMT-0700 (Mountain Standard Time),80,81,82,83,84
Wed Feb 12 2020 08:40:00 GMT-0700 (Mountain Standard Time),81,82,83,84,85
Wed Feb 12 2020 09:00:00 GMT-0700 (Mountain Standard Time),82,83,84,85,86
Wed Feb 12 2020 09:20:00 GMT-0700 (Mountain Standard Time),83,84,85,86,87
Wed Feb 12 2020 09:40:00 GMT-0700 (Mountain Standard Time),84,85,86,87,88
Wed Feb 12 2020 10:00:00 GMT-0700 (Mountain Standard Time),85,86,87,88,89
Wed Feb 12 2020 10:20:00 GMT-0700 (Mountain Standard Time),86,87,88,89,90
Wed Feb 12 2020 10:40:00 GMT-0700 (Mountain Standard Time),87,88,89,90,91
Wed Feb 12 2020 11:00:00 GMT-0700 (Mountain Standard Time),88,89,90,91,92
Wed Feb 12 2020 11:20:00 GMT-0700 (Mountain Standard Time),89,90,91,92,93
Wed Feb 12 2020 11:40:00 GMT-0700 (Mountain Standard Time),90,91,92,93,94
Wed Feb 12 2020 12:00:00 GMT-0700 (Mountain Standard Time),91,92,93,94,95
Wed Feb 12 2020 12:20:00 GMT-0700 (Mountain Standard Time),92,93,94,95,96
Wed Feb 12 2020 12:40:00 GMT-0700 (Mountain Standard Time),93,94,95,96,97
Wed Feb 12 2020 13:00:00 GMT-0700 (Mountain Standard Time),94,95,96,97,98
Wed Feb 12 2020 13:20:00 GMT-0700 (Mountain Standard Time),95,96,97,98,99
Wed Feb 12 2020 13:40:00 GMT-0700 (Mountain Standard Time),96,97,98,99,100
Wed Feb 12 2020 14:00:00 GMT-0700 (Mountain Standard Time),97,98,99,100,101
Wed Feb 12 2020 14:20:00 GMT-0700 (Mountain Standard Time),98,99,100,101,102
Wed Feb 12 2020 14:40:00 GMT-0700 (Mountain Standard Time),99,100,101,102,103
Wed Feb 12 2020 15:00:00 GMT-0700 (Mountain Standard Time),100,101,102,103,104
Wed Feb 12 2020 15:20:00 GMT-0700 (Mountain Standard Time),101,102,103,104,105
Wed Feb 12 2020 15:40:00 GMT-0700 (Mountain Standard Time),102,103,104,105,106
Wed Feb 12 2020 16:00:00 GMT-0700 (Mountain Standard Time),103,104,105,106,107
Wed Feb 12 2020 16:20:00 GMT-0700 (Mountain Standard Time),104,105,106,107,108
Wed Feb 12 2020 16:40:00 GMT-0700 (Mountain Standard Time),105,106,107,108,109
Wed Feb 12 2020 17:00:00 GMT-0700 (Mountain Standard Time),106,107,108,109,110
Wed Feb 12 2020 17:20:00 GMT-0700 (Mountain Standard Time),107,108,109,110,111
Wed Feb 12 2020 17:40:00 GMT-0700 (Mountain Standard Time),108,109,110,111,112
Wed Feb 12 2020 18:00:00 GMT-0700 (Mountain Standard Time),109,110,111,112,113
Wed Feb 12 2020 18:20:00 GMT-0700 (Mountain Standard Time),110,111,112,113,114
Wed Feb 12 2020 18:40:00 GMT-0700 (Mountain Standard Time),111,112,113,114,115
Wed Feb 12 2020 19:00:00 GMT-0700 (Mountain Standard Time),112,113,114,115,116
Wed Feb 12 2020 19:20:00 GMT-0700 (Mountain Standard Time),113,114,115,116,117
Wed Feb 12 2020 19:40:00 GMT-0700 (Mountain Standard Time),114,115,116,117,118
Wed Feb 12 2020 20:00:00 GMT-0700 (Mountain Standard Time),115,116,117,118,119
Wed Feb 12 2020 20:20:00 GMT-0700 (Mountain Standard Time),116,117,118,119,120
Wed Feb 12 2020 20:40:00 GMT-0700 (Mountain Standard Time),117,118,119,120,121
Wed Feb 12 2020 21:00:00 GMT-0700 (Mountain Standard Time),118,119,120,121,122
Wed Feb 12 2020 21:20:00 GMT-0700 (Mountain Standard Time),119,120,121,122,123
Wed Feb 12 2020 21:40:00 GMT-0700 (Mountain Standard Time),120,121,122,123,124
Wed Feb 12 2020 22:00:00 GMT-0700 (Mountain Standard Time),121,122,123,124,125
Wed Feb 12 2020 22:20:00 GMT-0700 (Mountain Standard Time),122,123,124,125,126
Wed Feb 12 2020 22:40:00 GMT-0700 (Mountain Standard Time),123,124,125,126,127
Wed Feb 12 2020 23:00:00 GMT-0700 (Mountain Standard Time),124,125,126,127,128
Wed Feb 12 2020 23:20:00 GMT-0700 (Mountain Standard Time),125,126,127,128,129
Wed Feb 12 2020 23:40:00 GMT-0700 (Mountain Standard Time),126,127,128,129,130
Thu Feb 13 2020 00:00:00 GMT-0700 (Mountain Standard Time),127,128,129,130,131
Thu Feb 13 2020 00:20:00 GMT-0700 (Mountain Standard Time),128,129,130,131,132
Thu Feb 13 2020 00:40:00 GMT-0700 (Mountain Standard Time),129,130,131,132,133
Thu Feb 13 2020 01:00:00 GMT-0700 (Mountain Standard Time),130,131,132,133,134
Thu Feb 13 2020 01:20:00 GMT-0700 (Mountain Standard Time),131,132,133,134,135
Thu Feb 13 2020 01:40:00 GMT-0700 (Mountain Standard Time),132,133,134,135,136
Thu Feb 13 2020 02:00:00 GMT-0700 (Mountain Standard Time),133,134,135,136,137
Thu Feb 13 2020 02:20:00 GMT-0700 (Mountain Standard Time),134,135,136,137,138
Thu Feb 13 2020 02:40:00 GMT-0700 (Mountain Standard Time),135,136,137,138,139
Thu Feb 13 2020 03:00:00 GMT-0700 (Mountain Standard Time),136,137,138,139,140
Thu Feb 13 2020 03:20:00 GMT-0700 (Mountain Standard Time),137,138,139,140,141
Thu Feb 13 2020 03:40:00 GMT-0700 (Mountain Standard Time),138,139,140,141,142
Thu Feb 13 2020 04:00:00 GMT-0700 (Mountain Standard Time),139,140,141,142,143
Thu Feb 13 2020 04:20:00 GMT-0700 (Mountain Standard Time),140,141,142,143,144
Thu Feb 13 2020 04:40:00 GMT-0700 (Mountain Standard Time),141,142,143,144,145
Thu Feb 13 2020 05:00:00 GMT-0700 (Mountain Standard Time),142,143,144,145,146
Thu Feb 13 2020 05:20:00 GMT-0700 (Mountain Standard Time),143,144,145,146,147
Thu Feb 13 2020 05:40:00 GMT-0700 (Mountain Standard Time),144,145,146,147,148
Thu Feb 13 2020 06:00:00 GMT-0700 (Mountain Standard Time),145,146,147,148,149
Thu Feb 13 2020 06:20:00 GMT-0700 (Mountain Standard Time),146,147,148,149,150
Thu Feb 13 2020 06:40:00 GMT-0700 (Mountain Standard Time),147,148,149,150,151
Thu Feb 13 2020 07:00:00 GMT-0700 (Mountain Standard Time),148,149,150,151,152
Thu Feb 13 2020 07:20:00 GMT-0700 (Mountain Standard Time),149,150,151,152,153
Thu Feb 13 2020 07:40:00 GMT-0700 (Mountain Standard Time),150,151,152,153,154
Thu Feb 13 2020 08:00:00 GMT-0700 (Mountain Standard Time),151,152,153,154,155
Thu Feb 13 2020 08:20:00 GMT-0700 (Mountain Standard Time),152,153,154,155,156
Thu Feb 13 2020 08:40:00 GMT-0700 (Mountain Standard Time),153,154,155,156,157
Thu Feb 13 2020 09:00:00 GMT-0700 (Mountain Standard Time),154,155,156,157,158
Thu Feb 13 2020 09:20:00 GMT-0700 (Mountain Standard Time),155,156,157,158,159
Thu Feb 13 2020 09:40:00 GMT-0700 (Mountain Standard Time),156,157,158,159,160
Thu Feb 13 2020 10:00:00 GMT-0700 (Mountain Standard Time),157,158,159,160,161
Thu Feb 13 2020 10:20:00 GMT-0700 (Mountain Standard Time),158,159,160,161,162
Thu Feb 13 2020 10:40:00 GMT-0700 (Mountain Standard Time),159,160,161,162,163
Thu Feb 13 2020 11:00:00 GMT-0700 (Mountain Standard Time),160,161,162,163,164

这回答了你的问题吗？非常感谢，现在效果很好-非常感谢！