web api instance property
Navigation: canGoBack property
The canGoBack read-only property of the
Navigation interface returns true
if it is possible to navigate backwards in the navigation history
(i.e., the currentEntry is
not the first one in the history entry list),
and false if it is not.
Value
A boolean value: true if it is possible to navigate backwards in the navigation history, false otherwise.
Examples
async function backHandler() {
if (navigation.canGoBack) {
await navigation.back().finished;
// Handle any required clean-up after
// navigation has finished
} else {
displayBanner("You are on the first page");
}
}
async function forwardHandler() {
if (navigation.canGoForward) {
await navigation.forward().finished;
// Handle any required clean-up after
// navigation has finished
} else {
displayBanner("You are on the last page");
}
}
Specifications
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.