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isDate()

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Overview

The isDate() function takes an expression as an argument, and returns true if it is a valid date-time value. Otherwise, it returns false.    

Return Type

  • BOOLEAN

Syntax

<variable> = isDate( <expression> );
(or)
<variable> = <expression>.isDate();
ParameterData typeDescription
<variable>BOOLEANVariable which will contain the returned boolean value.
<expression>-

The expression which needs to be checked.     

Text values containing a valid date-time value will return true, and which do not contain a valid date-time value will throw an error.

List and key-value data type will return a null value.

Examples

dateString= "01-Jan-2019";
 dateValue= '01-Jun-2020';
 numValue= 100 ;
 
 boolValOne = isDate(dateString); //returns true
 boolValTwo = isDate(numValue); // returns false
 boolValThree = dateValue.isDate(); // returns true

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