> ... The issue is the tiddler.title is being
> formatted as 'NaN' (as a missing wikiword) instead of displaying
...
> write '+tiddler.title+" - "+tiddler.text+"\n"'>>
The clauses of fET are actually snippets of javascript code.
In javascript, the "+" operator can be used either to join text
strings together (concatenation) or to calculate numeric values
(addition). Javascript also permits *mixed* expressions that combine
text strings and numeric values, implicitly recasting text strings
into numbers, or numbers into text, depending upon the type of the
initial variable in the expression; i.e., if an expression starts with
text, the remainder of the expression is recast as text; if the
expression starts with a number, the remainder of the expression is
recast as a number as well.
Thus, if the first variable is text:
"abc"+1 => abc1
"123"+1 => 1231
while, if the first variable is numeric:
1+"123" => 124
1+"abc" => 1
Note that in the last example above, "abc" contains no numeric
characters and, for most browser engines, has an implied value of 0
(zero). However, some browsers (IE in particular) convert non-numeric
text (i.e., "abc") into a special numeric value, NaN ("Not a
Number"). Numeric expressions containing a NaN value always produce a
NaN value as a result. Thus, in the last expression above, instead
of
1+"abc" => 1+0 => 1
you get
1+"abc" => 1+NaN => NaN
It's also important to note that if the expression starts with a text
string, you can FORCE that text to be recast as a number by using a
leading "+" operator, like this:
+"123"+1
The result is that "123" is recast as 123 and, instead of a text
result
"123"+1 => "1231"
you get a numeric result
+"123"+1 => 123 + 1 => 124
If the initial text string is non-numeric (e.g., "abc") then, for most
browsers, +"abc" has a 0 numeric value:
+"abc"+1 => 0+1 => 1
but, as noted above, IE will recast +"abc" as a NaN value:
+"abc"+1 => NaN+1 => NaN
Putting it all together: in your use case, the write clause you've
used produces code output like this:
+tiddler.title+" - "+tiddler.text+"\n"
However, the leading "+" in the write clause forces the tiddler.title
variable to be recast as a number, which gives a NaN value in IE, as
you are seeing.
SOLUTION: Try removing the first "+" from the write clause:
write 'tiddler.title+" - "+tiddler.text+"\n"'>>
Let me know how it works out
enjoy,
-e
Eric Shulman
TiddlyTools / ELS Design Studios
HELP ME TO HELP YOU - MAKE A CONTRIBUTION TO MY "TIP JAR"...
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