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StorageManager.persist()
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2021年12月.
**persist()**方法是StorageManager的一个接口,用于请求本地数据存储的权限,如果被授予权限,则返回一个 resolved 状态值为true的Promise对象,否则返回false。
语法
navigator.storage.persist().then(function(persistent) { ... })
参数
无
返回值
示例
js
if (navigator.storage && navigator.storage.persist)
navigator.storage.persist().then(function (persistent) {
if (persistent)
console.log("Storage will not be cleared except by explicit user action");
else
console.log("Storage may be cleared by the UA under storage pressure.");
});
规范
| Specification |
|---|
| Storage # dom-storagemanager-persist |
浏览器兼容性
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