我想在 JavaScript 中将 dd/mm/yyyy 转换为 mm/dd/yyyy。
var initial = 'dd/mm/yyyy'.split(/\//);
console.log( [ initial[1], initial[0], initial[2] ].join('/')); //=> 'mm/dd/yyyy'
编辑于2021/05/14:使用ES20xx的代码片段。
const pad = v => v.padStart(2, `0`);
const initialDate= new Date().toLocaleDateString("nl-NL")
.split(/[-/]/).map(pad).join("/");
const toFragments = dateString => initialDate
.split(/[-/]/).map(pad);
const dateTo_mmddyyyy = ([date, month, year], divider = "/") =>
`${month}${divider}${date}${divider}${year}`;
const [date, month, year] = toFragments(initialDate);
console.log( `initial (dd/mm/yyyy): ${initialDate}`);
console.log( `reformatted to mm/dd/yyyy (array join): ${
[month, date, year].join('/') }` );
console.log( `reformatted to mm-dd-yyyy (function): ${
dateTo_mmddyyyy(toFragments(initialDate), "-") }` );
var date = "24/09/1977";
var datearray = date.split("/");
var newdate = datearray[1] + '/' + datearray[0] + '/' + datearray[2];
newdate将包含09/24/1977。split方法会在发现“/”时拆分字符串,所以如果日期字符串为"24/9/1977",它仍然可以运行并返回9/24/1977。
这是 moment.js 的版本。该库可在 http://momentjs.com/ 找到。
//specify the date string and the format it's initially in
var mydate = moment('15/11/2000', 'DD/MM/YYYY');
//format that date into a different format
moment(mydate).format("MM/DD/YYYY");
//outputs 11/15/2000
将 dd/mon/yyyy
转换为 mm/dd/yyyy
:
months = {'jan': '01', 'feb': '02', 'mar': '03', 'apr': '04', 'may': '05',
'jun': '06', 'jul': '07', 'aug': '08', 'sep': '09', 'oct': '10', 'nov': '11',
'dec': '12'};
split = 'dd/mon/yyyy'.split('/');
[months[split[1]], split[0], split[2]].join('/');
将dd/mm/yyyy
转换为mm/dd/yyyy
:
split = 'dd/mm/yyyy'.split('/');
[split[1], split[0], split[2]].join('/');
尝试以下示例,其中使用正则表达式查找和切换字符串的部分:
var d1 = "03/25/2011";
var d2 = d1.replace(/^(\d{1,2}\/)(\d{1,2}\/)(\d{4})$/,"$2$1$3");
alert("d1:"+d1 +"\n d2:"+d2 )
/*
// OUTPUT
d1: 03/25/2011
d2: 25/03/2011
*/
编辑:
我注意到其他回答都没有使用正则表达式,我真的很好奇为什么... :)
var months = new Array("jan", "feb", "mar", "apr", "may", "jun", "jul", "aug", "sep", "oct", "nov", "dec");
var ddSplit = '12/23/2011'.split('/'); //date is mm/dd/yyyy format
alert(ddSplit[1]+'-'+months[ddSplit[0]-1] + '-' + ddSplit[2])
const setFormatDDMMYYYYtoMMDDYYYY = (date, separator = '/') => {
const [day, month, year] = date.split('/');
return month + separator + day + separator + year;
};
Try this, it works for me:
var fechaLatinFormat= "05-10-2016";//octuber 5, 2016 - octubre 5 del 2016
var datePieces = fechaLatinFormat.split("-");
var preFinalDate = new Date(parseInt(datePieces[2]), parseInt(datePieces[1]) - 1, parseInt(datePieces[0]));
console.log(preFinalDate.format("mm-dd-yyyy"));
或者:
var fechaLatinFormat= "05-10-2016";//octuber 5, 2016 - octubre 5 del 2016
var datePieces = fechaLatinFormat.split("-");
var preFinalDate = [datePieces[1] , datePieces[0] , datePieces[2]];
console.log(preFinalDate.join("-"));
var date = "31/03/2017 14:28";
var regex = /(\d+)/g;
var d = date.match(regex);
var out = d[2] + "-" + d[1] + "-" + d[0] + " " + d[3] + ":" + d[4];
var dag = new Date(out);
console.log(dag);
这是针对数字的正则表达式的唯一解决方案
var currentDate = new Date()
var day = currentDate.getDate()
var month = currentDate.getMonth()
var year = currentDate.getFullYear()
document.write("<b>" + month + "/" + day + "/" + year + "</b>")