java - For JavaFX's WebEngine, how do I get notified of javascript errors? -

i'm trying run svg contains javascript in javafx's webview. know of scripts i'm trying run have errors , trying figure out how print them console can debug them. i've tried following, weberrorevent never called:

webengine webengine = browser.getengine(); webengine.setonerror(new eventhandler<weberrorevent>() {     @override     public void handle(weberrorevent event)     {         system.err.println(event);     } }); 

is right way javascript error feedback control?

setonerror listener works error while loading given document.

one way solve call java method when console.log called. can by.

your fx application

webengine engine = mainwebview.getengine(); engine.load("http://whereever.com");  engine.getloadworker().stateproperty().addlistener(new changelistener<worker.state>() {     @override     public void changed(observablevalue<? extends worker.state> observable, worker.state oldvalue, worker.state newvalue) {         jsobject window = (jsobject) engine.executescript("window");         window.setmember("java", new bridge());         engine.executescript("console.log = function(message) { java.log(message); }"); // ever console.log called in html log in java console    } }); 

your bridge class

public class bridge {      public void exit() {         platform.exit();     }      public void log(string text) {         system.out.println(text);     }  } 

your html

<h1>text page</h1> <button onclick="java.log('this log')">log</button> <button onclick="console.log('this produces same result above')">console.log</button> <button onclick="java.exit()">exit</button> 

hope of help.