PageTransitionEvent

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

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

EventPageTransitionEvent

Example

HTML

html
<!doctype html>
<html>
  <body onpageshow="myFunction(event)"></body>
</html>

JavaScript

js
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

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