批量清除zotero中extra字段（当前清除包含citations的行）

zotero_clean_extra.js

// Reference: https://forums.zotero.org/discussion/82558/rdf-extra-field

var fieldName = "extra";

var fieldID = Zotero.ItemFields.getID(fieldName);
var s = new Zotero.Search();
s.libraryID = Zotero.Libraries.userLibraryID;
s.addCondition(fieldName, 'contains', ': ');
s.addCondition('joinMode', 'any');
var ids = await s.search();
if (!ids.length) {
    return "No items found";
}
//message = ""
await Zotero.DB.executeTransaction(async function () {
    for (let id of ids) {
        let item = await Zotero.Items.getAsync(id);
        let mappedFieldID = Zotero.ItemFields.getFieldIDFromTypeAndBase(item.itemTypeID, fieldName);
        var oldValue = item.getField(mappedFieldID ? mappedFieldID : fieldID)
        var newValue = oldValue.replace(/\n^.*citations.*/gm, '');
        //message = message + "--------\nold:" + oldValue + "\nnew:" + newValue + "\n"
        
        item.setField(mappedFieldID ? mappedFieldID : fieldID, newValue);
        await item.save();
    }
});
//return message;
return ids.length + " item(s) updated";