JS_IsExtensible 编辑
This article covers features introduced in SpiderMonkey 1.8.5
Query [[Extensible]] properly of the given object.
Syntax
bool
JS_IsExtensible(JSContext *cx, JS::HandleObject obj, bool *extensible);
| Name | Type | Description |
|---|---|---|
cx | JSContext * | The context. Requires request. In a JS_THREADSAFE build, the caller must be in a request on this JSContext. |
obj | JS::HandleObject | The object to examine. |
extensible | bool * | Out parameter. Receives true if extensible, false otherwise. |
Description
JS_IsExtensible queries [[Extensible]] property of the specified object, obj.
If successful, JS_IsExtensible stores [[Extensible]] property to *extensible and returns true, otherwise returns false and the value of *extensible is undefined.
See also
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