10 examples of 'javascript date get day' in JavaScript

157
getDay()                { return !(this.value instanceof Date) ? NaN : this.value.getDay(); }

67
getDayOfWeek(date: Date): number {
68
  return date.getDay();
69
}

124
function getDay(str){
125
    var oDate = new Date(str);
126
    var oDay = oDate.getDate();
127
    return getzf(oDay);
128
}

118
function getDay(day: number) {
119
  const t = new Date(time);
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  t.setDate(t.getDate() + day);
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  const m = t.getMonth() + 1;
122
  return t.getFullYear() + '-' + m + '-' + t.getDate();
123
}

40
static dayOfWeek (date) {
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  var day = date.getDay()
42
  return {
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    1: 'Mon',
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    2: 'Tue',
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    3: 'Wed',
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    4: 'Thu',
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    5: 'Fri',
48
    6: 'Sat',
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    0: 'Sun'
50
  }[day]
51
}

125
export function getFirstDayOfMonth(day) {
126
    return new Date(day.getFullYear(), day.getMonth(), 1, 12);
127
}

96
function getDaysInMonth(d) {
97
  var resultDate = getFirstDayOfMonth(d);
98
  resultDate.setMonth(resultDate.getMonth() + 1);
99
  resultDate.setDate(resultDate.getDate() - 1);
100
  return resultDate.getDate();
101
}

42
export function getDaysInMonth (d) {
43
  const resultDate = getFirstDayOfMonth(d);
44
45
  resultDate.setMonth(resultDate.getMonth() + 1);
46
  resultDate.setDate(resultDate.getDate() - 1);
47
48
  return resultDate.getDate();
49
}

32
function checkDay(){
33
    var pre_time = localStorage['today'];
34
    var now_time = new Date().getDay();
35
    if (pre_time == now_time){
36
        return false;
37
    }else{
38
        return now_time;
39
    }
40
}

26
function getPreviousMonday(date) {
27
    var date = new Date(date); //clone date to avoid changes in the parameter
28
    var dayOfWeek = date.getDay();
29
    var monday = date.getDate() - dayOfWeek;
30
    monday += (dayOfWeek == 0 ? -6:1); // adjust when day is Sunday
31
32
    return new Date(date.setDate(monday));
33
}