checkURL(url) → {boolean}
Checks if the given URL has been loaded into the Cache.This method will only work if Cache.autoResolveURL was set to true before any preloading took place.The method will make a DOM src call to the URL given, so please be aware of this for certain file types, such as Sound files on Firefoxwhich may cause double-load instances.
Parameters
Name Type Description url string The url to check for in the cache.
Returns
boolean - True if the url exists, otherwise fa