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When to use merge fields in Visualforce email?
You can use the following functions in your Visualforce pages. Within an email template, merge fields can only be used in formula functions and operations when the merge field belongs to the record the email will be related to, otherwise these fields won’t resolve.
How to do isblank in Visualforce developer guide?
ISBLANK (expression) and replace expression with the expression you want evaluated. Checks if the record is a clone of another record and returns TRUE if one item is a clone. Otherwise, returns FALSE. Checks if the formula is running during the creation of a new record and returns TRUE if it is.
How to use functions in Visualforce developer guide?
Returns a time value in GMT representing the current moment. Use this function instead of the NOW function if you only want to track time, without a date. Returns the local time value without the date, such as business hours. TIMEVALUE (value) and replace value with a date/time or text value, merge field, or expression.
Which is a function in Visualforce that returns true?
Checks if the formula is running during the creation of a new record and returns TRUE if it is. If an existing record is being updated, this function returns FALSE. Determines if an expression is null (blank) and returns TRUE if it is.
Is the date data type in Visualforce wrong?
The date/time data type might not evaluate correctly in formula expressions for Visualforce pages with an API version less than 20.0. It may be incorrectly interpreted as just a date type. Returns the date that is the indicated number of months before or after a specified date.
How to use nullvalue in Visualforce developer guide?
NULLVALUE (expression, substitute_expression) and replace expression with the expression you want to evaluate; replace substitute_expression with the value you want to replace any blank values. Determines if expressions are true or false.