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A very simple class for some basic dates operations in Javascript
/**
* A very simple class for some basic Date operations
* @author Felipe Lavín <www.yukei.net>
*/
var dateHelper = {
arrToDate : function(arr, format){
/**
* Convert an array to a Date object
* @argument arr {Array} An array containing at least day-month-year
* @argument format {String} An string representation of the date format. Default: dd-mm-yyyy. More could be added as necessary
* @returns {Date} A date object
*/
switch(format){
case 'mm-dd-yyyy' :
var out = new Date(arr[2], arr[0] - 1, arr[1]);
break;
case 'yyyy-mm-dd' :
var out = new Date(arr[0], arr[1] - 1, arr[2]);
break;
default : //dd-mm-yyyy
var out = new Date(arr[2], arr[1] - 1, arr[0]);
break;
}
return out;
},
dateToStr : function(dateObj, format, separator){
/**
* Convert a date object to a string
* @argument dateObj {Date} A date object
* @argument format {string} An string representation of the date format. Default: dd-mm-yyyy. More could be added as necessary
* @argument separator {string} Character used for join the parts of the date
* @returns {string} An string representation of a Date
*/
var year = dateObj.getFullYear().toString();
var month = dateObj.getMonth() + 1;
var month = ( month < 10 ) ? '0'+month : month;
var day = dateObj.getDate();
var day = ( day < 10 ) ? '0'+day : day;
var sep = ( separator ) ? separator : '-';
switch(format){
case 'mm-dd-yyy' :
var out = [month, day, year];
break;
case 'yyyy-mm-dd' :
var out = [year, month, day];
break;
default : //dd-mm-yyy
var out = [day, month, year];
}
return out.join(sep);
},
addDays : function(dateObj, days){
/**
* Add a number of days to a given Date
* @argument dateObj {Date} A Date object
* @argument days {Number} The number of days to be added
* @returns {Date} A new Date object, with the days added
*/
var dateVal = dateObj.valueOf();
return new Date( parseInt(dateVal + ( days * 86400000 ) ) );
},
reformatArr : function(dateIn, formatIn, formatOut, separator){
/**
* Takes an array with date information and display it on as a string in a different format
* @argument dateIn {array} An array with the date information
* @argument formatIn {string} The format for the input date array
* @argument formatOut {string} The format for the date string output
* @argument separator {string} Character used as separator
* @returns {string} Formatted date string
*/
if ( !formatIn ) formatIn = 'yyyy-mm-dd';
if ( !formatOut ) formatOut = 'dd-mm-yyyy';
if ( !separator ) separator = '/';
var orDate = this.arrToDate(dateIn, formatIn);
return this.dateToStr(orDate, formatOut, separator);
}
}
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