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vincentp81166026
Known Participant
April 2, 2017
Answered

[JS] #include does not work

  • April 2, 2017
  • 1 reply
  • 1724 views

Hi guys,

i'm an Applescript guy trying to translate an AS script in JS.

So far, it's working with one pb though: i want to use the array.filter method in my script but it doesn't work.

I've replaced it via a simple loop and it work, but as it seems it could be done via the use of a polyfill, i tried that too, without success.

I guess i have done something wrong somewhere and i hoped someone here could help me find it!

What i've done so far:

- copy the polyfill for that method from this page on MDN,

- creating a new file on ExtendScript*, paste the code, save the file ("polyfills.jsx"**) in the same folder as my script.

- added at the beginning of my script "#include 'polyfills.jsx';"

* I don't know if it's relevant, but the selected engine when saving the file was "Adobe InDesign CC2017 (12.064)", the same used by my script.

** I couldn't use the .jsxinc extension as when i do that, it create a "polyfills.jsxinc.jsx" file.

When i launch my script in ExtendScript Toolkit, it throws an error on the line where i use the filter method : 'xxx.filter is not a function'.

So the polyfill doesn't seem to work.

The code where i use the filter method:

var my_textFrames = doc.textFrames;

var my_filtered_textFrames = my_textFrames.filter(function (element) {

    return (element.label.indexOf('tableau') !== -1);

});

Thank for your help!

config:

OS X 10.11.6

InDesign CC 2017 12.0.0.81

ExtendScript Toolkit 4.0.0.1

This topic has been closed for replies.
Correct answer Vamitul

doc.textFrames is not an ARRAY but a collection.

you should convert it to an array:

var my_textFrames = doc.textFrames.everyItem().getElements();

1 reply

Vamitul
VamitulCorrect answer
Legend
April 2, 2017

doc.textFrames is not an ARRAY but a collection.

you should convert it to an array:

var my_textFrames = doc.textFrames.everyItem().getElements();

V
vincentp81166026Author
Known Participant
April 2, 2017

Ok i'll try that, thanks for the quick reply!

L
Community Expert
LaubenderCommunity Expert
Community Expert
April 2, 2017

Hi Vincent,

you have to be very careful using the right string for filtering with prototyped method filter() as presented at MDN.

Example

I know, it's a bit dump, but I like to show a point here.

Category 1 | Have some text frames labeled:

"SelectThis"

Category 2 | Others should be labeled:

"DoNotSelectThis"

Example line in your filter function:

return (element.label.indexOf("SelectThis") !== -1);

would return all two categories of labeled text frames.

So I would suggest the more lame approach with a different tool set to get the labeled text frames:

var doc = app.documents[0];
var textFramesArray = doc.textFrames.everyItem().getElements();
var textFramesArrayLength = textFramesArray.length;
var n = 0;
var regExp = RegExp("^SelectThis$"); // A softened version would be: RegExp("^SelectThis$", "i")
var resultArrayOfTextFrames = [];
for(n=0;n<textFramesArrayLength;n++)
{
    var currentItem = textFramesArray;
    
    if(currentItem.label.match(regExp))
    {
        resultArrayOfTextFrames[resultArrayOfTextFrames.length++] = 
        textFramesArray;
    };
};

Or this alternative in the for loop using method test() on a RegExp.

// ALTERNATIVE for match():
    if(regExp.test(currentItem.label))
    {
        resultArrayOfTextFrames[resultArrayOfTextFrames.length++] = 
        textFramesArray;
    };

Regards,
Uwe

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