FetchEvent: isReload property
Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.
Note: This feature is only available in Service Workers.
The isReload read-only property of the
FetchEvent interface returns true if the event was
dispatched by the user attempting to reload the page, and false otherwise.
Pressing the refresh button is a reload while clicking a link and pressing the back
button is not.
Value
A boolean value.
Examples
self.addEventListener("fetch", (event) => {
event.respondWith(async () => {
if (event.isReload) {
// Return something
} else {
// Return something else
}
})();
});
Browser compatibility
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isReload
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Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- No support
- No support
- Non-standard. Check cross-browser support before using.
- Deprecated. Not for use in new websites.
- See implementation notes.