Js Promise
A JavaScript Promise
.
Allows using Java code as promise handlers. The Promise
object is alive while the web page where it was created is loaded. When the web page is unloaded, all the JavaScript objects are disposed. An attempt to access the already disposed JavaScript Promise will lead to the IllegalStateException
.
Usage example:
JsPromise jsPromise = frame.executeJavaScript("Promise.resolve('Resolved')");
jsPromise.then(results -> System.out.println(results[0]));
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Functions
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Registers a rejection handler for this promise and returns a new one.
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Registers a handler that will be invoked if the promise is settled (fulfilled/rejected) and returns a new promise.
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Checks whether this JavaScript object or any of its prototypes has an enumerable property with the given
name
.Link copied to clipboard
Returns an immutable list of the names of the properties of this JavaScript object, both enumerable and non-enumerable, excluding the properties from the prototype objects.
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Returns an immutable list of the names of the enumerable properties of this JavaScript object, including the properties from the prototype objects.
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Creates a new property with the given
name
or updates the existing one in the current JavaScript object and returns true
if the property with the given name
was created or updated successfully.Link copied to clipboard
Removes a property with the given
name
in the JavaScript object and returns
true
if the property was successfully removed.Link copied to clipboard
Registers a fulfillment handler for this promise and returns a new one.
Registers fulfillment and rejection handlers for this promise and returns a new one.