JS_DefineConstDoubles 编辑
Create multiple constant double or integer valued properties on an object.
Syntax
bool
JS_DefineConstDoubles(JSContext *cx, JS::HandleObject obj,
const JSConstDoubleSpec *cds);
bool
JS_DefineConstIntegers(JSContext *cx, JS::HandleObject obj,
const JSConstIntegerSpec *cis); // Added in SpiderMonkey 38
| Name | Type | Description |
|---|---|---|
cx | JSContext * | The context in which to define the new properties. Requires request. In a JS_THREADSAFE build, the caller must be in a request on this JSContext. |
obj | JSObject * | Object for which to create new properties. |
cds | JSConstDoubleSpec * | Pointer to an array of JSConstDoubleSpec records containing property names and values to create. The last array element must contain zero-valued members. |
cis | JSConstIntegerSpec * | Pointer to an array of JSConstIntegerSpec records containing property names and values to create. The last array element must contain zero-valued members. |
Description
JS_DefineConstDoubles creates one or more properties for a specified object, obj, where each property consists of a double value.
JS_DefineConstIntegers creates one or more properties for a specified object, obj, where each property consists of a int32_t value.
The attributes for each property is set to JSPROP_READONLY | JSPROP_PERMANENT.
Obsolete from JSAPI 35
Each property is automatically assigned attributes as specified in the flags field of the JSConstDoubleSpec/JSConstIntegerSpec structure pointed to by cds/cis. If flags is set to 0, the attributes for the property are automatically set to JSPROP_PERMANENT | JSPROP_READONLY.
cds and cis are pointers to the first element of an array of JSConstDoubleSpec/JSConstIntegerSpec structures. Each array element defines a single property name and property value to create. The name field of the last element of the array must contain 0.
JS_DefineConstDoubles/JS_DefineConstIntegers create one property for each element in the array what contains a non-zero name field.
On success, JS_DefineConstDoubles/JS_DefineConstIntegers returns true, indicating it has created all properties listed in the array. Otherwise it returns false.
See Also
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论