I have a string of a date in javascript in format #1. I need to convert it to format #2.
The problem starts when one format is "dd/mm/yy" and the other is "mm/dd/yy".
The formats change dynamically and I have the formats as strings, but I need a function like
Date newDate = convert(currentDate, currentFormatString, newFormatString). How can I do it?
You should look into momentjs, which is a javascript date/time library. With that, you can easily convert between dates of different format. In your case, it would be:
string newDate = moment(currentDate, currentFormatString).format(newFormatString)
For example, moment("21/10/14", "DD/MM/YY").format("MM/DD/YY") would return "10/21/14"
mmm/DD/YYYY is not a valid format, you're looking for: var newDate = moment("Nov/21/2015", "MMM/DD/YYYY").format("MM/DD/YYYY");alert(newDate);You can use the above described answer of momnet.js or the function below for splitting and using it
For using moment.js make sure you enter your old and new format in upper case
function parseDate(strDate) { var dateFormat = $('#currentDateFormat').val(); var str; var res; var strFormat = dateFormat.split('.'); if (strFormat.length != 3) strFormat = dateFormat.split('/'); if (strFormat.length != 3) strFormat = dateFormat.split('-'); str = strDate.split('.'); if (str.length != 3) str = strDate.split('/'); if (str.length != 3) str = strDate.split('-'); if (strFormat[0].substr(0, 1) == 'd' && strFormat[1].substr(0, 1) == 'M' && strFormat[2].substr(0, 1) == 'y') // for dd MM yyyy res = new Date(str[2], str[1], str[0]); if (strFormat[0].substr(0, 1) == 'M' && strFormat[1].substr(0, 1) == 'd' && strFormat[2].substr(0, 1) == 'y') // for MM dd yyyy res = new Date(str[2], str[0], str[1]); if (strFormat[0].substr(0, 1) == 'y' && strFormat[1].substr(0, 1) == 'M' && strFormat[2].substr(0, 1) == 'd') res = new Date(str[0], str[1], str[2]); if (strFormat[0].substr(0, 1) == 'y' && strFormat[1].substr(0, 1) == 'd' && strFormat[2].substr(0, 1) == 'M') res = new Date(str[0], str[2], str[1]); return res; } You can use the function below
console.log(changeDateFormat('12/1/2020','dd/MM/yyyy','MM/dd/yyyy')); function changeDateFormat(value, inputFormat, outputFormat) { let outputSplitter = "/"; let strOutputFormat = outputFormat.split(outputSplitter).map(i => i.toUpperCase()); if (strOutputFormat.length != 3) { strOutputFormat = outputFormat.split('-'); outputSplitter = '-'; } if (strOutputFormat.length != 3) throw new Error('wrong output format splitter :('); let date = null; if (value instanceof Date) { date = { ["YYYY"]: value.getUTCFullYear(), ["MM"]: value.getMonth() + 1, ["DD"]: value.getDate() } } if (typeof value == 'string') { let inputSplitter = "/"; var strInputFormat = inputFormat.split(inputSplitter).map(i => i.toUpperCase()); if (strInputFormat.length != 3) { strInputFormat = inputFormat.split('-'); inputSplitter = '-'; } if (strInputFormat.length != 3) throw new Error('wrong input format splitter :('); let dateElements = value.split(inputSplitter); if (dateElements.length != 3) throw new Error('wrong value :('); date = { [strInputFormat[0]]: dateElements[0], [strInputFormat[1]]: dateElements[1], [strInputFormat[2]]: dateElements[2], } } if (!date) throw new Error('unsupported value type:('); let result = date[strOutputFormat[0]] + outputSplitter + date[strOutputFormat[1]] + outputSplitter + date[strOutputFormat[2]]; return result; } It seems that you should use the library of query-dateformat git hub for jquery-dateformat
or you can use the normal function like date-time-formate, use the library to config the formate template
if you use jQuery datepicker you can use something like this one
$.datepicker.formatDate("dd/mm/yy", $.datepicker.parseDate("mm/dd/yy", "11/28/2023")); answer will be "28/11/2023"
