JS implementation date information to increase the number of years, months, days

functionDateAdd (interval, number, date) {/** Function: Realize the DATEADD function of JSScript.            * Parameter: Interval, string expression representing the time interval to be added.            * Parameter: number, numeric expression that indicates how many time intervals to add.            * Parameters: Date, Time object.            * Returns: the new Time object.            * var now = new Date ();            * var newdate = DateAdd ("D", 5,now); *---------------DateAdd (interval,number,date)-----------------*/            Switch(interval) { Case"Y": {date.setfullyear (Date.getfullyear ()+Number ); returndate;  Break; }                 Case"Q": {date.setmonth (Date.getmonth ()+ Number * 3); returndate;  Break; }                 Case"M": {date.setmonth (Date.getmonth ()+Number ); returndate;  Break; }                 Case"W": {date.setdate (date.getdate ()+ Number * 7); returndate;  Break; }                 Case"D": {date.setdate (date.getdate ()+Number ); returndate;  Break; }                 Case"H": {date.sethours (date.gethours ()+Number ); returndate;  Break; }                 Case"M": {date.setminutes (date.getminutes ()+Number ); returndate;  Break; }                 Case"S": {date.setseconds (Date.getseconds ()+Number ); returndate;  Break; }                default: {date.setdate (d.getdate ()+Number ); returndate;  Break; }            }        }    //called       varNewdate = DateAdd ("Y", 1, dtadate);

Turn: Http://blog.163.com/[email protected]/blog/static/13393333720141066026886/

JS implementation date information to increase the number of years, months, days