The IsUnknown() function checks if value has no value.

Syntax

IsUnknown(value)

Returns

A boolean value true if value has no value.

Parameters

  • value the value on which the check is performed.

Note: This function is the opposite of the function IsKnown().

Examples

IsUnknown("")   /* false */
IsUnknown(0)    /* false */
IsUnknown(1/0)  /* true */

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Videos and images courtesy of WEM Modeler.
© 2019 WEM Modeler.
SitemapPrivacy - Terms - Company