# Bank Loaded Callback in HTML5
**URL:** https://qa.fmod.com/t/bank-loaded-callback-in-html5/21034
**Category:** FMOD Engine
**Tags:** html5
**Created:** [December 26, 2023, 3:01pm UTC](https://qa.fmod.com/t/bank-loaded-callback-in-html5/21034 "2023-12-26T15:01:28Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@skymen](https://qa.fmod.com/u/skymen)
#### Post date: [December 26, 2023, 3:01pm UTC](https://qa.fmod.com/t/bank-loaded-callback-in-html5/21034/1 "2023-12-26T15:01:28Z")
Hi,
In the Manual you say the following
> Bank loading can be controlled with the [FMOD\_STUDIO\_LOAD\_BANK\_FLAGS](https://www.fmod.com/docs/2.02/api/studio-api-system.html#fmod_studio_load_bank_flags). When loading banks with [FMOD\_STUDIO\_LOAD\_BANK\_NORMAL](https://www.fmod.com/docs/2.02/api/studio-api-system.html#fmod_studio_load_bank_normal), the function will not return until the bank has completed loading. When using the [FMOD\_STUDIO\_LOAD\_BANK\_NONBLOCKING](https://www.fmod.com/docs/2.02/api/studio-api-system.html#fmod_studio_load_bank_nonblocking) flag, the load bank function will return before the bank has completed loading.
Is that still true for JS? I assume it does not, because unless I am mistaken, loading URLs in JS is always asynchronous. In this case, how can I implement an async loading that returns a promise with the properly loaded bank at the end?
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### Author:  [@Connor\_FMOD](https://qa.fmod.com/u/Connor_FMOD)
#### Post date: [January 1, 2024, 10:31pm UTC](https://qa.fmod.com/t/bank-loaded-callback-in-html5/21034/2 "2024-01-01T22:31:42Z")
Hi,
You can still use the non-blocking method it will just require the `system.update` call so that it can continue to load correctly. You can read more about it in our documentation here: [FMOD Engine | Platform Details - HTML5](https://fmod.com/docs/2.02/api/platforms-html5.html#non-blocking-loading).
Hope this helps