Conversion of strings and dates and formatting of dates using JavaScript _ javascript tips-js tutorial

This article mainly introduces how to convert strings and dates and format them in JavaScript. Here, regular expressions are used to replace dates and format them. For more information, see String to date, date to string

// 2014-02-25/*** String Conversion time (yyyy-MM-dd HH: mm: ss) * result (minute) */stringToDate: function (fDate) {var fullDate = fDate. split ("-"); return new Date (fullDate [0], fullDate [1]-1, fullDate [2], 0, 0, 0 );} /*** format date ** @ param date * @ param format, for example, yyyy-MM-dd HH: mm: ss E * @ return formatted amount */formatDate: function (date, format) {var v = ""; if (typeof date = "string" | typeof date! = "Object") {return;} var year = date. getFullYear (); var month = date. getMonth () + 1; var day = date. getDate (); var hour = date. getHours (); var minute = date. getMinutes (); var second = date. getSeconds (); var weekDay = date. getDay (); var MS = date. getMilliseconds (); var weekDayString = ""; if (weekDay = 1) {weekDayString = "Monday";} else if (weekDay = 2) {weekDayString = "Tuesday";} else if (weekDay = 3) {weekDayString = "weekDay";} else if (weekDay = 4) {weekDayString = "Thursday ";} else if (weekDay = 5) {weekDayString = "Friday";} else if (weekDay = 6) {weekDayString = "Saturday";} else if (weekDay = 7) {weekDayString = "Sunday";} v = format; // Year v = v. replace (/yyyy/g, year); v = v. replace (/YYYY/g, year); v = v. replace (/yy/g, (year + ""). substring (2, 4); v = v. replace (/YY/g, (year + ""). substring (2, 4); // Month var monthStr = ("0" + month); v = v. replace (/MM/g, monthStr. substring (monthStr. length-2); // Day var dayStr = ("0" + day); v = v. replace (/dd/g, dayStr. substring (dayStr. length-2); // hour var hourStr = ("0" + hour); v = v. replace (/HH/g, hourStr. substring (hourStr. length-2); v = v. replace (/hh/g, hourStr. substring (hourStr. length-2); // minute var minuteStr = ("0" + minute); v = v. replace (/mm/g, minuteStr. substring (minuteStr. length-2); // Millisecond v = v. replace (/sss/g, MS); v = v. replace (/SSS/g, MS); // second var secondStr = ("0" + second); v = v. replace (/ss/g, secondStr. substring (secondStr. length-2); v = v. replace (/SS/g, secondStr. substring (secondStr. length-2); // weekDay v = v. replace (/E/g, weekDayString); return v;} // dateValue = 2014-02-28 var cDate = _ STAGE. stringToDate (dateValue); cDate. setDate (cDate. getDate () + 1); currentDate = jAnXin. util. formatDate (cDate, "yyyy-MM-dd"); console. log (currentDate); // 2014-03-01

Replace the date with regular expressions and format the date.

Convert to numeric type:

Ar ttDate = "December 20, 2013 14:20:20"; ttDate = ttDate. replace (/[^ 0-9]/mg ,''). match (/. {8}/); alert (ttDate );

Result:

20131220 

Date type:

Var ttDate = "December 20, 2013 14:20:20"; ttDate = ttDate. match (/\ d {4 }. \ d {1, 2 }. \ d {1, 2}/mg ). toString (); ttDate = ttDate. replace (/[^ 0-9]/mg, '-'); alert (ttDate );

Result:

2013-12-20 

Super Regular Expression replacement:

Var ttDate = "December 20, 2013 14:20:20"; ttDate = ttDate. replace (/(\ d {4 }). (\ d {1, 2 }). (\ d {1, 2 }). +/mg, '$1-$2-$ 3'); alert (ttDate );

Result:

2013-12-20