Question

我正在尝试使用moment.js格式化日期数组，但出现错误提示

dayOfWeek.format不是函数

我已正确导入

var startOfWeek = moment().startOf('isoWeek');
var endOfWeek = moment().endOf('isoWeek');

var days = [];
var day = startOfWeek;

while (day <= endOfWeek) {
    days.push(day.toDate());
    day = day.clone().add(1, 'd');
}




var week = days.map(function(dayOfWeek, i){
  console.log(dayOfWeek);
  dayOfWeek.format("dddd, DD-MM-YYYY")
});

Answer 1

moment().format()函数用法不正确。

当前为：

dayOfWeek.format("dddd, DD-MM-YYYY")

更改为：

moment(dayOfWeek).format("dddd, DD-MM-YYYY")

在此处查看更多信息：https://momentjs.com/docs/#/parsing/string-formats/

Answer 2

dayOfWeek = moment(dayOfWeek).format("dddd, DD-MM-YYYY");

Answer 3

您的代码将失败，因为dayOfWeek不是moment对象。

要检查您的变量是否为moment对象，请使用.isMoment：

moment.isMoment(dayOfWeek)。

要解决您的问题，只需替换

dayOfWeek.format("dddd, DD-MM-YYYY")

使用

moment(dayOfWeek).format("dddd, DD-MM-YYYY")

您还缺少return函数中的.map语句。

工作示例：

var startOfWeek = moment().startOf('isoWeek');
var endOfWeek = moment().endOf('isoWeek');

var days = [];
var day = startOfWeek;

while (day <= endOfWeek) {
    days.push(day.toDate());
    day = day.clone().add(1, 'd');
}




var week = days.map(function(dayOfWeek, i){
  return moment(dayOfWeek).format("dddd, DD-MM-YYYY")
});

console.log(week);

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.2/moment.min.js"></script>

Answer 4

提示，您也可以这样做

var currentDate = moment(new Date()); // pass your date obj here.
console.log(currentDate.format('DD-MM-YY HH:mm:ss')); // later simply do this.

<script src="https://unpkg.com/moment@2.22.2/min/moment.min.js"></script>

无法使用moment.js格式化

4 个答案: