blocks|key|2069349|text|您可以使用ScriptEngine来执行javascript。初始化ScriptEngine，然后加载脚本并对其进行计算，如下面提到的代码所示|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2069350|ScriptEngineManager+manager+=+new+ScriptEngineManager();++
ScriptEngine+engine+=+manager.getEngineByName("JavaScript");++

//+JavaScript+code+in+a+String++
String+script+=+"function+hello(arg)+{+print(arg);+}";++

//+evaluate+script++
engine.eval(script);|code-block|syntax|javascript|2069351|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can use ScriptEngine to execute a javascript. initialize ScriptEngine, then load the script in and evaluate it, as shown in below mentioned code

<pre><code>ScriptEngineManager manager = new ScriptEngineManager(); 
ScriptEngine engine = manager.getEngineByName("JavaScript"); 

// JavaScript code in a String 
String script = "function hello(arg) { print(arg); }"; 

// evaluate script 
engine.eval(script);
</code></pre>

blocks|key|4329978|text|可以使用WebEngine.executeScript()方法在WebView中运行javascript。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4329979|有很多方法可以通过javascript来突出显示文本。例如，Highlight+word+in+HTML+text+(but+not+markup)|4329980|总而言之：|4329981|++++WebView+webView+=+new+WebView();
++++final+WebEngine+engine+=+webView.getEngine();
++++engine.load("https://stackoverflow.com/questions/14029964/execute-a-javascript-function-for-a-webview-from-a-javafx-program");

++++engine.getLoadWorker().stateProperty().addListener(
++++++++++++new+ChangeListener<State>()+{
++++++++++++++++@Override
++++++++++++++++public+void+changed(ObservableValue+ov,+State+oldState,+State+newState)+{
++++++++++++++++++++if+(newState+==+State.SUCCEEDED)+{
++++++++++++++++++++++++engine.executeScript(
++++++++++++++++++++++++++++++++"function+highlightWord(root,word){"
++++++++++++++++++++++++++++++++%2B+"++textNodesUnder(root).forEach(highlightWords);"
++++++++++++++++++++++++++++++++%2B+""
++++++++++++++++++++++++++++++++%2B+"++function+textNodesUnder(root){"
++++++++++++++++++++++++++++++++%2B+"++++var+n,a=[],w=document.createTreeWalker(root,NodeFilter.SHOW_TEXT,null,false);"
++++++++++++++++++++++++++++++++%2B+"++++while(n=w.nextNode())+a.push(n);"
++++++++++++++++++++++++++++++++%2B+"++++return+a;"
++++++++++++++++++++++++++++++++%2B+"++}"
++++++++++++++++++++++++++++++++%2B+""
++++++++++++++++++++++++++++++++%2B+"++function+highlightWords(n){"
++++++++++++++++++++++++++++++++%2B+"++++for+(var+i;+(i=n.nodeValue.indexOf(word,i))+>+-1;+n=after){"
++++++++++++++++++++++++++++++++%2B+"++++++var+after+=+n.splitText(i%2Bword.length);"
++++++++++++++++++++++++++++++++%2B+"++++++var+highlighted+=+n.splitText(i);"
++++++++++++++++++++++++++++++++%2B+"++++++var+span+=+document.createElement('span');"
++++++++++++++++++++++++++++++++%2B+"++++++span.style.backgroundColor='#f00';"
++++++++++++++++++++++++++++++++%2B+"++++++span.appendChild(highlighted);"
++++++++++++++++++++++++++++++++%2B+"++++++after.parentNode.insertBefore(span,after);"
++++++++++++++++++++++++++++++++%2B+"++++}"
++++++++++++++++++++++++++++++++%2B+"++}"
++++++++++++++++++++++++++++++++%2B+"}"
++++++++++++++++++++++++++++++++%2B+"\n"
++++++++++++++++++++++++++++++++%2B+"highlightWord(document.body,'function');");
++++++++++++++++++++}
++++++++++++++++}
++++++++++++});


++++Scene+scene+=+new+Scene(webView,+500,+500);

++++primaryStage.setTitle("Hello+World!");
++++primaryStage.setScene(scene);
++++primaryStage.show();|code-block|syntax|javascript|4329982|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/10729983/highlight-word-in-html-text-but-not-markup^0|4|P|W|7|0|U|18|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|11|8|@]|D|@$9|12|A|13|1|14]]|E|$]]|$1|H|3|I|5|6|7|15|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|16|8|@]|D|@]|E|$M|N]]|$1|O|3|-4|5|6|7|17|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]]]

To run javascript in <code>WebView</code> you can use <code>WebEngine.executeScript()</code> method.

And there are plenty of ways to highlight text by javascript. E.g. <a href="https://stackoverflow.com/questions/10729983/highlight-word-in-html-text-but-not-markup">Highlight word in HTML text (but not markup)</a>

All together:

<pre><code> WebView webView = new WebView();
 final WebEngine engine = webView.getEngine();
 engine.load("https://stackoverflow.com/questions/14029964/execute-a-javascript-function-for-a-webview-from-a-javafx-program");

 engine.getLoadWorker().stateProperty().addListener(
 new ChangeListener&lt;State&gt;() {
 @Override
 public void changed(ObservableValue ov, State oldState, State newState) {
 if (newState == State.SUCCEEDED) {
 engine.executeScript(
 "function highlightWord(root,word){"
 + " textNodesUnder(root).forEach(highlightWords);"
 + ""
 + " function textNodesUnder(root){"
 + " var n,a=[],w=document.createTreeWalker(root,NodeFilter.SHOW_TEXT,null,false);"
 + " while(n=w.nextNode()) a.push(n);"
 + " return a;"
 + " }"
 + ""
 + " function highlightWords(n){"
 + " for (var i; (i=n.nodeValue.indexOf(word,i)) &gt; -1; n=after){"
 + " var after = n.splitText(i+word.length);"
 + " var highlighted = n.splitText(i);"
 + " var span = document.createElement('span');"
 + " span.style.backgroundColor='#f00';"
 + " span.appendChild(highlighted);"
 + " after.parentNode.insertBefore(span,after);"
 + " }"
 + " }"
 + "}"
 + "\n"
 + "highlightWord(document.body,'function');");
 }
 }
 });


 Scene scene = new Scene(webView, 500, 500);

 primaryStage.setTitle("Hello World!");
 primaryStage.setScene(scene);
 primaryStage.show();
</code></pre>

I am trying to execute a Javascript function from a Java program. The Javascript function takes the content of a HTML file and highlights the occurrences of a particular word.

Is it possible to call a Javascript function from a webview object?

Execute a Javascript function for a WebView from a JavaFX program

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在尝试从Java程序执行Javascript函数。Javascript函数获取HTML文件的内容，并突出显示出现的特定单词。可以从webview对象中调用Javascript函数吗？

问从JavaFX程序为WebView执行Javascript函数
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