Javascript 在InDesign框架中查找未标记特定标记的元件，并使用另一标记标记它们

你可能想要这样的东西:

var frame = app.selection[0];
if (!(frame instanceof TextFrame)) exit();

var tag_to_apply = 'YYY';
var tag_to_skip = 'XXX';

var characters = frame.parentStory.characters;
// var characters = frame.parentStory.words; // <-- if you don't need to include the spaces

var start = 0, end = 0;
while (end < characters.length) {

    // get the end of unttaged text
    while (characters[end].associatedXMLElements[0].markupTag.name != tag_to_skip) {
        end++;
        if (end >= characters.length) break;
    }

    // apply the tag from the start to the end
    app.activeDocument.xmlElements[0].xmlElements.add(tag_to_apply, characters.itemByRange(start, end-1));

    // shift the end of untagged text
    end += 2;
    if (end >= characters.length) break;

    // loop through the text tagged with the skip-tag
    while (characters[end].associatedXMLElements[0].markupTag.name == tag_to_skip) {
        end++;
        if (end >= characters.length) break;
    }

    // reset the start and shift the end further
    start = end;
    end += 2;
}