[英]typescript - get the day name from a date
我试图从日期中获取日期名称,但日期为27/02/2021
我得到 Invalid Date
new Date(exam.examDate).toLocaleString('fr-FR', { weekday: 'long' })
我尝试使用 datePipe 转换日期,但它返回以下错误
无法将“27/02/2021”转换为 pipe 'DatePipe 的日期'
new Date(this.datePipe.transform(exam.examDate, "dd/MM/yyyy")).toLocaleString('fr-FR', { weekday: 'long' })
您可以从Date
获取自定义日期名称,例如:
const names = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'];
const dayName = names[dateObject.getDay()];
const date = '27/02/2021'; const d = date.split('/'); const names = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday']; const dayName = names[new Date(d[2],d[1],d[0]).getDay()]; console.log(dayName);
这是因为Date
期望MM/DD/YYYY
但您正在传递DD/MM/YYYY
:
const getDay = date => { const parts = date.split('/'); return new Date(+parts[2], +parts[1] - 1, +parts[0]).toString().split(' ')[0]; } console.log( getDay('27/02/2021') );
使用moment.js
:
const getDay = date => moment(date, "DD/MM/YYYY").format('ddd'); console.log( getDay('27/02/2021') );
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.1/moment.min.js" integrity="sha512-qTXRIMyZIFb8iQcfjXWCO8+M5Tbc38Qi5WzdPOYZHIlZpzBHG3L3by84BBBOiRGiEb7KKtAOAs5qYdUiZiQNNQ==" crossorigin="anonymous"></script>
examDate = "27/02/2021"; date = examDate.split("/"); x = new Date(date[2], date[1] - 1, date[0]); // it prints "samedi" console.log(x.toLocaleString('fr-FR', { weekday: 'long' }));
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