Document.hasStorageAccess()
Document
的**hasStorageAccess()
** 方法返回了一个Promise
来判断该文档是否有访问第一方储存的权限。
通过 Storage Access API (en-US) 获取更多信息。
语法
var promise = document.hasStorageAccess();
参数
None.
返回值
一个用来判断文档是否有权利访问其第一方存储的Promise
。
If the promise gets resolved and a user gesture event was being processed when the function was originally called, the resolve handler will run as if a user gesture was being processed, so it will be able to call APIs that require user activation.
Examples
document.hasStorageAccess().then(hasAccess => {
if (hasAccess) {
// storage access has been granted already.
} else {
// storage access hasn't been granted already;
// you may want to call requestStorageAccess().
}
});
Specifications
The API is currently only at the proposal stage — the standardization process has yet to begin. You can currently find specification details of the API at Apple's Introducing Storage Access API blog post, and WHATWG HTML issue 3338 — Proposal: Storage Access API.
Browser compatibility
BCD tables only load in the browser