How to use a script to obtain the paragraph style of the first paragraph of the selected text?

Hi! When text is selected, app.selection[0] is a Text object, so you can get its first paragraph directly:

var sel = app.selection[0];

if (sel instanceof Text && sel.paragraphs.length > 0) {

    var pStyle = sel.paragraphs[0].appliedParagraphStyle;

    $.writeln("Style: " + pStyle.name);

    $.writeln("Leading: " + pStyle.leading);

}

A couple of notes:

- sel.paragraphs[0] is the paragraph containing the start of the selection — this works even if the selection starts mid-paragraph or is just an insertion point.

- ParagraphStyle.leading gives you the leading defined in the style: either a point value (e.g. "14.4 pt") or Leading.AUTO when the style uses auto-leading. If it's auto and you need the effective value, read pStyle.autoLeading (the percentage) and multiply it by the type size.

- If the user selects a whole text frame instead of text, use sel.parentStory.paragraphs[0].appliedParagraphStyle instead.