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BooleanFormat

Last updated on May 30, 2024 | Also applies to ColdFusion

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Description

This function takes a value and returns "true" or "false" depending on the value.

Returns

"true", for a non-zero value; "false" for zero, false, and an empty string ("").

BooleanFormat(25) returns true. BooleanFormat(false) returns false.

The function throws an exception when you pass any string other than empty string ("").

For example, BooleanFormat("Hello") throws an exception.

But, BooleanFormat("true") or BooleanFormat("yes") returns true.

Similarly, BooleanFormat("false") or BooleanFormat("no") returns false.

Null value

BooleanFormat("null"): Throws an exception because null is treated as a string.
BooleanFormat(null): Null is treated as a variable, so will search for the value. If no such variable exists, an exception is thrown.
BooleanFormat(javacast("null","null")): Here actual null is being passed, and hence it will return false.

Syntax

BooleanFormat(value)

Parameters

Parameter	Description
value	A number, boolean value, null, or an empty string.

Example

<cfscript>
 val=0;
 str="1123";
 writeoutput(BooleanFormat(val)); // returns false
 writeoutput(BooleanFormat(str)); // returns true
</cfscript>

Using member function

<cfscript>
       val=false;
       WriteOutput(val.BooleanFormat());
</cfscript>

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