Difference between revisions of "Manipulating Dates"
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[[Category:JavaScript]] | [[Category:JavaScript]] |
Revision as of 13:02, 16 August 2010
The following JavaScript functions are built-in to SmartSimple to assist with manipulation and calculations using dates:
ConvertDateStr
Takes a date that is in the users preferred display format and returns the date in the standard database format of yyyy-mm-dd.
Syntax:
- ConvertDateStr(date,'@dateformat@')
Where:
- date is the date you wish to change to the yyyy-mm-dd' format.
Example:
var newDate=ConvertDateStr(frm.startdate.value,'@dateformat@');
ConvertDate
Takes a date that is in the standard database format of yyyy-mm-dd and converts it to the preferred display format of the current user.
Syntax:
- ConvertDate(date,'@dateformat@')
Where:
- date is the date you wish to change to the users preferred display format.
Example:
var newDate=ConvertDate(sdate,'@dateformat@');
Notes
- When populating a date field that is displayed on the page it must be added in the preferred date format of the current user, as the system will automatically change it to yyyy-mm-dd when the page is saved.
dateadd
Add the specified interval to a date
Syntax:
- dateadd(date,unit,interval)
Where:
- date is the date you wish to add to (or delete from) in format yyyy-mm-dd
- unit specifies what is being added:
- 'd' (days)
- 'm' (months)
- 'y' (years)
- interval is the number of days/months/years to be added.
Example:
var newDate=ConvertDate(sdate,'m',duration);
Example
The following example adds a specified number of months (saved in cf_123456) to the startdate, and saves it as the enddate.
var sdate=ConvertDateStr(frm.startdate.value,'@dateformat@'); var duration=parseInt(parseFloat(frm.cf_123456.value)); if(isNaN(duration)){ alert("Invalid Duration provided"); return; } var edate=dateadd(sdate,'m',duration); frm.enddate.value=ConvertDate(edate,"@dateformat@");