state

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.

返回在 history 栈顶的 任意 值的拷贝。通过这种方式可以查看 state 值,不必等待 popstate事件发生后再查看。

语法

js
let currentState = history.state;

如果不进行下面两种类型的调用,state 的值将会是 null

pushState() or replaceState().

例子

下面 log 例句输出 history.state 的值,首先是在没有执行 pushState() 语句进而将值 push 到 history 之前的 log。下面一行 log 语句再次输出 state 值,此时 history.state 已经有值。可以在脚本文件中执行下面语句,或者在控制台直接执行。

js
// 值为 null 因为我们还没有修改 history 栈
console.log(`History.state before pushState: ${history.state}`);

// 现在 push 一些数据到栈里
history.replaceState({ name: "Example" }, "pushState example", "page3.html");

// 现在 state 已经有值了
console.log(`History.state after pushState: ${history.state}`);

规范

Specification
HTML
# dom-history-state-dev

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
state

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support

See also