Home/ Questions/Q 4541836
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-21T15:18:00+00:00

I have an HTML5 webapp wherein I use localStorage to retain some client-side user

  • 0

I have an HTML5 webapp wherein I use localStorage to retain some client-side user settings between uses. I thought I had it all working well, but I recently find that in the WebOS browser the localStorage items are cleared after the browser is completely closed (all cards–not just my page). It is acting like it is saved to session storage, but that is not the case. Here is a minimal example that illustrates my problem:

<!DOCTYPE html>
<html>
    <head>
        <title>test</title>
        <meta charset="utf-8" />
        <meta name="apple-mobile-web-app-capable" content="yes">
        <script type="text/javascript" src="js/jquery.min.js"></script>
        <script>
            $(function() {
                $('#btnV').click(function() {
                    var x = '';
                    for(var i = 0; i < localStorage.length; i++) {
                        x += localStorage.key(i) + ':' + localStorage.getItem(localStorage.key(i)) + '<br/>';
                    }
                    $('#lbl').empty().append(x);
                });
                $('#btnS').click(function() {
                    localStorage.setItem('test', 'blah');
                });
            });
        </script>
    </head>
    <body>
        <span id="lbl"></span>
        <input type="button" id="btnS" value="Save" />
        <input type="button" id="btnV" value="View" />
    </body>
</html>

When I first load the page and click the “View” button, nothing is shown. If I click “Save” and then “View” I will see the item as saved. Refreshing the page and clicking View immediately shows the value is retained across page-reload. However, if I completely close out the browser and then go back in to the page, “View” will show no values as it did the very first time. Am I setting localStorage items incorrectly, or is my WebOS browser configured somehow to do this? I couldn’t find anything relevant in the settings.

Thanks…

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    So far as I know, localStorage is not supported in WebOS 1.4.x. I think I remember seeing it listed as a feature that was enabled in WebOS 2.0 (or maybe 2.1), but I cannot find any documentation on the subject, so I could be misremembering.

    Assuming you are storing a small amount of data, user settings are usually more appropriately stored in cookies in WebOS using Mojo.Model.Cookie.

    In my own app, I use cookies for user preferences, and store the app data in an HTML5 database database, with my open-source database class making the HTML5 database access less onerous.

    • 0