Can't delete all section

[jakec88782761]

Hi guys,

Why does ID not allow you to delete all sections.

for ( i = allSections.length; i > 0; i-- ) {

    allSections.remove();

    }

This says undefined is not an object but I have 2 sections in my document.

allSections = doc.sections.everyItem().getElements();

[Peter Kahrel · Accepted solution]

A document must have at least one section with at least one page.

P.

[Obi-wan Kenobi]

Hi,

Are these 3 codes equivalent?

Thanks in advance!

app.activeDocument.sections.itemByRange(1, app.activeDocument.sections.length-1).remove();
allSections = app.activeDocument.sections.everyItem().getElements();
S = allSections.length;
for ( var s = 1 ; s < S ; s++)  allSections.remove();
allSections = app.activeDocument.sections.everyItem().getElements();
for ( s = allSections.length-1 ; s > 0 ; s-- )  allSections.remove();

(^/)

[Peter Kahrel]

Well, Michel, they have the same result so in that sense they're equivalent. The approaches are slightly different. So it depends on what you understand by 'equivalent'.

P.

[Obi-wan Kenobi]

Peter,

Can I use them indifferently? … or could one of them be risky to be used in certain situations?

(^/) 

[Peter Kahrel]

I think they're equally safe. There may be performance differences, I don't know. Probably depends on the size of the document, the number of sections, the number of pages per section, etc. You could do a comparison of the three methods, on a smallish document and on a big one and compare the results.

P.

[Trevor:]

app.activeDocument.sections.itemByRange(1, app.activeDocument.sections.length-1).remove();

will throw an error if there's only one section.

ItemByRange is generally (considerably) quicker

[jakec88782761]

Thank you all for your help and useful comments!

I made this function which does what I needed.

[Jongware]

While Peter is right (naturally), it's not the reason why you get that error.

If you have 2 sections, the count is '2' but since counting starts at 0, their indexes are 0 and 1.

You try to remove a section with index 2, which does not exist. So you get that error.

[Peter Kahrel]

> You try to remove a section with index 2, which does not exist. So you get that error.

I read the first sentence and thought that I had seen enough. Clearly not!