Post-loading : check if an image is in the browser cache

Question

Short version question : Is there navigator.mozIsLocallyAvailable equivalent function that works on all browsers, or an alternative?

Long ve

Answer 1

Just in case others may come across the same issue. some of the solutions provided here (namely storing the cache info in a local browser data storage) could break for two reasons. Firstly if cache of the image expires and secondly if the cache is cleared by the user. Another approach would be to set the source of image to an placeholder. Then changing the source to the image path/name. This way it becomes the responsibility of the browser to check its own cache. Should work with most browsers regardless of their API.