PageWidth how to assign a value to a variable?

[menglv]

PageWidth how to assign a value to a variable?

How to use PageWidth variable in JavaScript?

[freddyp]

var pageWidth = job.getVariableAsNumber("[Stats.PageWidth]");

[menglv]

Really worked, thank you very much.

[menglv]

var re =job.getPath();

re=re.mid(0,re.findRev("/")) + "/"+job.getName();

var curFileStats = new FileStatistics(re);

currentbook = curFileStats.getNumber("PageWidth");



why can't work?

[dkelly]

Is your job a file or folder?

[menglv]

dkelly wrote: Is your job a file or folder?


my job is a file.

[menglv]

how to use function FileStatistics?

[dkelly]

If your job is a single file use:



var curFileStats = new FileStatistics(job.getPath());

currentbook = curFileStats.getNumber("PageWidth");

[menglv]

dkelly wrote: If your job is a single file use:



var curFileStats = new FileStatistics(job.getPath());

currentbook = curFileStats.getNumber("PageWidth");


I tried, but without success.

Can you give me an example of flow?







test.sflow

[dkelly]

Your script doesn't follow the example I gave. You are not using the FileStatistics variable curFileStats to retrieve the PageHeight.

[menglv]

dkelly wrote: Your script doesn't follow the example I gave. You are not using the FileStatistics variable curFileStats to retrieve the PageHeight.






return value：undefined

[menglv]

dkelly wrote: Your script doesn't follow the example I gave. You are not using the FileStatistics variable curFileStats to retrieve the PageHeight.






return value：undefined



Does anyone know what is the reason?

[freddyp]

The return value of a script expression is the "last" variable on a line of its own.



var result = "1";

result;



If the script expression is more than just one or two lines I recommend to structure it as follows: create a function that returns a value and call that function on the last line of your script expression. You do not have to do it like this, but it is generically applicable.



function someFunction(par1, par2)

{

var returnValue;

//perform stuff that gives returnValue the correct value



return returnValue;

}



someFunction("first parameter",second_parameter);



Freddy

[menglv]

freddyp wrote: Freddy


Theresult of this variable is not important, the key is currentbook which returned the result is undefined. I want this currentbook value equals pdf's PageHeight.

[freddyp]

Then just write



currentbook;



as the last line of your script expression. I thought that was clear from the explanation.



Freddy