WorkerGlobalScope：isSecureContext 属性
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2018.
WorkerGlobalScope 接口的 isSecureContext 只读属性返回一个布尔值，指示当前上下文是安全的（true）还是不安全的（false）。
值
一个布尔值。
规范
| Specification |
|---|
| HTML # dom-issecurecontext-dev |