StorageManager.persisted()
**persisted()
**方法是StorageManager
的一个接口,如果盒存储模式(box mode)的值为“persistent”则返回一个 resolved 状态值为true
的Promise
。
语法
navigator.storage.persisted().then(function(persistent) { ... })
参数
无
返回值
示例
js
if (navigator.storage && navigator.storage.persist)
navigator.storage.persisted().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 Standard # dom-storagemanager-persisted |
浏览器兼容性
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