DocuVieware Reference Guide
Reference Guides > JavaScript API > Events > RegisterOnThumbnailsOrderChanged

This function allows you trigger a function of your own when the thumbnails order has been changed (ie. the pages have been reordered).

RegisterOnThumbnailsOrderChanged: function (docuViewareID, callback)


The identifier for the DocuVieware™ instance.
The function you want to execute on event.
The callback provides an argument having a prototype { source, destination }.
- source is an array that contains the page number (or page numbers in case of multiple selection) that have been moved.
- destination is the position the selection has been moved to.

Return Value

1 if error.

Example of usage

This JavaScript makes sure the DocuVieware control is properly loaded and initialized and then subscribes to the event on load.

function RegisterOnThumbnailsOrderChangedOnDocuViewareAPIReady() {
    if (typeof DocuViewareAPI !== "undefined" && DocuViewareAPI.IsInitialized("DocuVieware1")) {
        DocuViewareAPI.RegisterOnThumbnailsOrderChanged("DocuVieware1", function (data) { 
            console.log(data.source + " has been moved to " + data.destination); 
    else {
        setTimeout(function () { RegisterOnThumbnailsOrderChangedOnDocuViewareAPIReady() }, 10);
document.addEventListener("DOMContentLoaded", function () {
}, false);