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htmlbool
| Format: htmlbool ( value ) |
Purpose: Checks whether value, if interpreted as a HTML Boolean argument, is true.
Return Values: A HTML Boolean is false if:
- it is the Boolean false
- it is the null value
Example:
| heitml input: | resulting output: |
| <? htmlbool(true)> | true |
| <? htmlbool(false)> | false |
| <? htmlbool("true")> | true |
| <? htmlbool("false")> | true |
| <? htmlbool("Gwendolyn")> | true |
| <? htmlbool(" ")> | false |
| <? htmlbool("")> | false |
| <? htmlbool(null)> | false |
| <? htmlbool(emptytuple)> | false |
| <? htmlbool(5)> | true |
| <? htmlbool(3.1415)> | true |
Tip: The htmlbool() function should prove useful when you need to redefine a HTML tag with optional arguments of Boolean type.
Example:
heitml input:
<def gnarl verbose=null;
if htmlbool(verbose)>
We're gnarling now
</if;
? "gnarl!";
/def>
<gnarl><br>
<gnarl verbose>
| resulting output:
gnarl! |
See Also: isdecl(), isempty().
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