Page transition events fire when a webpage is being loaded or unloaded.
当网页在加载完成或卸载后会触发页面传输事件（Page transition events）。
DOM Information
Inheritance Hierarchy
Event
PageTransitionEvent
Example
HTML
<!DOCTYPE html>
<html>
<body onpageshow="myFunction(event)">
</body>
</html>JavaScript
function myFunction(event) {
if (event.persisted) {
alert("The page was cached by the browser");
} else {
alert("The page was NOT cached by the browser");
}
}Members
The PageTransitionEvent object has these types of members:
Properties
The PageTransitionEvent object has these properties.
| Property | Access type | Description |
|---|---|---|
|
persisted |
只读 |
标记页面是否从缓存（Backforward Cache）中加载 |