property
Returns an Optional describing the value of the JavaScript object's property with the given name or an empty Optional if there is no such property or its value is undefined.
The type mapping rules are the following:
| JavaScript | Java |
|--------------------|----------------|
| Number | Double |
| BigInt | BigInteger |
| String | String |
| Boolean | Boolean |
| Symbol | JsSymbol |
| null and undefined | null |
| Node | JsObject, Node |
| ArrayBuffer | JsArrayBuffer |
| Array | JsArray |
| Set | JsSet |
| Map | JsMap |
| Object | JsObject |
| Proxy Object | Object |
Proxy objects are mapped to the corresponding injected Java object.
Return
an Optional describing the value of the JavaScript object's property with the given name. If the object does not have this property or the property value is null or undefined, the method returns an empty Optional
Parameters
the result type according to the type mapping rules
a string that represents the name of the property or function
See also
Throws
when name is empty or blank
when the JavaScript object is already disposed or invalid
Returns an Optional describing the value of the JavaScript object's property with the given jsSymbol key or an empty Optional if there is no such property or its value is undefined.
Return
an Optional describing the value of the JavaScript object's property with the given jsSymbol key. If the object does not have this property or the property value is null or undefined, the method returns an empty Optional
Since
8.13.0
Parameters
the result type according to the type mapping rules
a symbol that represents the property key
See also
Throws
when jsSymbol is from a different web page or frame
when the JavaScript object or jsSymbol is already disposed or invalid