# How can I receive the current and published weweb live version with JavaScript? **URL:** \ **Category:** Developer corner\ **Created:** [July 15, 2024, 6:27am UTC](https://community.weweb.io/t/how-can-i-receive-the-current-and-published-weweb-live-version-with-javascript/9720 "2024-07-15T06:27:34Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![stefan](https://avatars.discourse-cdn.com/v4/letter/s/bbce88/32.png) [@stefan](https://community.weweb.io/u/stefan)\ **Post date:** [July 15, 2024, 6:27am UTC](https://community.weweb.io/t/how-can-i-receive-the-current-and-published-weweb-live-version-with-javascript/9720/1 "2024-07-15T06:27:34Z")
Hi there, How can I get the current application version number (of our web app) and the published application version using JavaScript code? I need to know this information so I can write a JavaScript script that checks every 15 minutes if a new update is available, and shows the user a popup message asking them to refresh the web page. Thanks, Stefan ---
**Author:** ![Broberto](https://sea2.discourse-cdn.com/flex016/user_avatar/community.weweb.io/broberto/32/5918_2.png) [@Broberto](https://community.weweb.io/u/Broberto)\ **Post date:** [July 15, 2024, 6:53am UTC](https://community.weweb.io/t/how-can-i-receive-the-current-and-published-weweb-live-version-with-javascript/9720/2 "2024-07-15T06:53:16Z")
This can be done simply with pwa, are you self hosting? ---
**Author:** ![MichaelLovell](https://sea2.discourse-cdn.com/flex016/user_avatar/community.weweb.io/michaellovell/32/2157_2.png) [@MichaelLovell](https://community.weweb.io/u/MichaelLovell)\ **Post date:** [July 15, 2024, 7:04am UTC](https://community.weweb.io/t/how-can-i-receive-the-current-and-published-weweb-live-version-with-javascript/9720/3 "2024-07-15T07:04:25Z")
Here is a snippet I use in custom js On App Load. You can access the version number in your deployments. Save it somewhere and then check the cacheVersion against the deployed version number. ```auto // Get the cache version of the application let version = window.wwg_cacheVersion; // Update the variable ['cacheVersion] wwLib.wwVariable.updateValue('80e49d79-......-8cd291322232', version); console.log("version: ", version) return version; ``` ---
**Author:** ![stefan](https://avatars.discourse-cdn.com/v4/letter/s/bbce88/32.png) [@stefan](https://community.weweb.io/u/stefan)\ **Post date:** [July 15, 2024, 7:27am UTC](https://community.weweb.io/t/how-can-i-receive-the-current-and-published-weweb-live-version-with-javascript/9720/4 "2024-07-15T07:27:30Z")
Hi there, Thank you for your answer. I will test it here. Thanks, Stefan ---
**Author:** ![stefan](https://avatars.discourse-cdn.com/v4/letter/s/bbce88/32.png) [@stefan](https://community.weweb.io/u/stefan)\ **Post date:** [July 15, 2024, 8:12am UTC](https://community.weweb.io/t/how-can-i-receive-the-current-and-published-weweb-live-version-with-javascript/9720/5 "2024-07-15T08:12:39Z")
Hi @MichaelLovell I tried to use your suggestion. However, I do not see a way to determine the current live app version when the user is still using the old version. @Broberto Yes it is a self hosting. A code suggestion on PWA will be welcome. Thanks, Stefan ---
**Author:** ![stefan](https://avatars.discourse-cdn.com/v4/letter/s/bbce88/32.png) [@stefan](https://community.weweb.io/u/stefan)\ **Post date:** [July 15, 2024, 9:05am UTC](https://community.weweb.io/t/how-can-i-receive-the-current-and-published-weweb-live-version-with-javascript/9720/6 "2024-07-15T09:05:14Z")
Hi there, Another question, how can I edit the default PWA code from weweb to add my custom code for checking the app version number. Thanks, Stefan ---
**Author:** ![Broberto](https://sea2.discourse-cdn.com/flex016/user_avatar/community.weweb.io/broberto/32/5918_2.png) [@Broberto](https://community.weweb.io/u/Broberto)\ **Post date:** [July 15, 2024, 9:31am UTC](https://community.weweb.io/t/how-can-i-receive-the-current-and-published-weweb-live-version-with-javascript/9720/7 "2024-07-15T09:31:59Z")
You can edit the service worker to trigger a workflow on app updated, it’s really simple and ChatGPT should be able to do this for you. You should be able to make this with the GPT, [in my case, it should be enough for you to go till the step 3. and do the banner in step 4. in WeWeb.](https://chatgpt.com/share/17193408-80fe-4575-9084-c1c80b063eef) ---
**Author:** ![MichaelLovell](https://sea2.discourse-cdn.com/flex016/user_avatar/community.weweb.io/michaellovell/32/2157_2.png) [@MichaelLovell](https://community.weweb.io/u/MichaelLovell)\ **Post date:** [July 15, 2024, 10:06am UTC](https://community.weweb.io/t/how-can-i-receive-the-current-and-published-weweb-live-version-with-javascript/9720/8 "2024-07-15T10:06:17Z")
For context, I’m using self hosting. When I make a deployment I save a deployment log in my db with the version number. Then I use a workflow On App Load to check whether the cacheVersion matches the latest deployment version. If false, show a a banner message or force a refresh. ---
**Author:** ![stefan](https://avatars.discourse-cdn.com/v4/letter/s/bbce88/32.png) [@stefan](https://community.weweb.io/u/stefan)\ **Post date:** [July 15, 2024, 11:01am UTC](https://community.weweb.io/t/how-can-i-receive-the-current-and-published-weweb-live-version-with-javascript/9720/9 "2024-07-15T11:01:01Z")
Hi there, @Broberto In ChatGPT, is step 3 not needed for weweb? It uses the default service worker code from weweb. @MichaelLovell > When I make a deployment I save a deployment log in my db with the version number. > So you use a third-party service like Xano to fetch the version number? I want a solution without any dependencies. Thanks, Stefan ---
**Author:** ![Broberto](https://sea2.discourse-cdn.com/flex016/user_avatar/community.weweb.io/broberto/32/5918_2.png) [@Broberto](https://community.weweb.io/u/Broberto)\ **Post date:** [July 15, 2024, 11:12am UTC](https://community.weweb.io/t/how-can-i-receive-the-current-and-published-weweb-live-version-with-javascript/9720/10 "2024-07-15T11:12:41Z")
What I would do is use my prompt, and paste your service worker there for the ChatGPT to alter it accordingly. The prompt I shared is just an example, it’s not in a WeWeb context, even though very similar. ---
**Author:** ![stefan](https://avatars.discourse-cdn.com/v4/letter/s/bbce88/32.png) [@stefan](https://community.weweb.io/u/stefan)\ **Post date:** [July 19, 2024, 1:59pm UTC](https://community.weweb.io/t/how-can-i-receive-the-current-and-published-weweb-live-version-with-javascript/9720/12 "2024-07-19T13:59:50Z")
Hi there, I am currently using this code, but the message box (set by a variable) is always on top. When I click the refresh button in my message box, the **message box still keeps showing**. Each refresh the code think there is a new version. Does anyone have any suggestions on what might be causing this issue and how to solve this problem? My code, in the app load event: ```auto if('serviceWorker' in navigator){ navigator.serviceWorker.register('/serviceworker.js').then((registration) => { console.log('Service Worker registered with scope:', registration.scope); // Check for updates registration.onupdatefound = () => { const installingWorker = registration.installing; installingWorker.onstatechange = () => { if(installingWorker.state === 'installed'){ if(navigator.serviceWorker.controller){ // New update available notifyUserAboutUpdate(); } } }; }; }).catch((error) => { console.error('Service Worker registration failed:', error); }); } function notifyUserAboutUpdate(){ // variable AppUpdateAvailable (boolean) variables['90b9e60d-521f-40fa-8514-287c0e724eac'] = true; // window.location.reload(); } ``` Thanks, Stefan ---
**Author:** ![stefan](https://avatars.discourse-cdn.com/v4/letter/s/bbce88/32.png) [@stefan](https://community.weweb.io/u/stefan)\ **Post date:** [August 9, 2024, 11:18am UTC](https://community.weweb.io/t/how-can-i-receive-the-current-and-published-weweb-live-version-with-javascript/9720/13 "2024-08-09T11:18:31Z")
Hi there, Does anyone have another working solution that matches the limitations of the weweb platform? Thanks, Stefan