jQuery和Java小程序 [英] jQuery and Java applets
问题描述
我的工作,我们正在使用,其中的Java小程序的UI的一部分(地图,特别是)一个项目,但各地建设用HTML / JavaScript的applet的用户界面的其余部分,与applet通过通信LiveConnect的/ NPAPI。有点离奇,我知道,但是让我们presume的设置不讨论。我开始打算使用jQuery作为我的JavaScript框架,但我碰到的两个问题。
问题的第一次:
选择小程序不提供访问applet的方法。
Java的:
公共类MyApplet扩展JApplet的{
// ...
公共字符串美孚(){返回福! }
}
JavaScript的:
VAR小程序= $(#小程序-ID);
警报(applet.foo());
在
运行以上的JavaScript结果$(#小程序-ID)。foo是不是一个函数
这是相对于原型,其中类似code不工作:
VAR小程序= $(小程序-ID);
警报(applet.foo());
所以......哪儿applet的方法去?
问题第二:
有与jQuery和小程序在Firefox 2的已知问题:<一href=\"http://www.pengoworks.com/workshop/jquery/bug_applet/jquery_applet_bug.htm\">http://www.pengoworks.com/workshop/jquery/bug_applet/jquery_applet_bug.htm
这是一个长镜头,但没有任何人知道一种解决方法吗?我怀疑这个问题是不是可以解决的,这将意味着切换到原型。
感谢您的帮助!
对于第一个问题,怎么样努力
警报($(#小程序-ID)[0]包含.foo());
对于这里的第二个问题是href=\"http://groups.google.com/group/jquery-dev/browse_thread/thread/c67483e58caacbfd\">一个可能的解决方法线程一个 引用的解决办法
在IE
// prevent内存泄漏
//而且prevent刷新上像在其他浏览器的鼠标悬停事件的错误
//不包括窗口,以便不解除现有卸载事件
jQuery的(窗口).bind(卸载,
功能(){
jQuery的(*)加(文件).unbind()。
});
块引用>
更改code为:
//窗口不包括以免解除现有的卸载事件
jQuery的(窗口).bind(卸载,
功能(){
jQuery的(*:不是('小程序,对象'))增加(文件).unbind();
});
块引用>I'm working on a project where we're using a Java applet for part of the UI (a map, specifically), but building the rest of the UI around the applet in HTML/JavaScript, communicating with the applet through LiveConnect/NPAPI. A little bizarre, I know, but let's presume that setup is not under discussion. I started out planning on using jQuery as my JavaScript framework, but I've run into two issues.
Issue the first:
Selecting the applet doesn't provide access to the applet's methods.
Java:
public class MyApplet extends JApplet { // ... public String foo() { return "foo!"; } }
JavaScript:
var applet = $("#applet-id"); alert(applet.foo());
Running the above JavaScript results in
$("#applet-id").foo is not a functionThis is in contrast to Prototype, where the analogous code does work:
var applet = $("applet-id"); alert(applet.foo());
So...where'd the applet methods go?
Issue the second:
There's a known problem with jQuery and applets in Firefox 2: http://www.pengoworks.com/workshop/jquery/bug_applet/jquery_applet_bug.htm
It's a long shot, but does anybody know of a workaround? I suspect this problem isn't fixable, which will mean switching to Prototype.
Thanks for the help!
解决方案For the first issue, how about trying
alert( $("#applet-id")[0].foo() );
For the second issue here is a thread with a possible workaround.
Quoting the workaround
// Prevent memory leaks in IE // And prevent errors on refresh with events like mouseover in other browsers // Window isn't included so as not to unbind existing unload events jQuery(window).bind("unload", function() { jQuery("*").add(document).unbind(); });
change that code to:
// Window isn't included so as not to unbind existing unload events jQuery(window).bind("unload", function() { jQuery("*:not('applet, object')").add(document).unbind(); });
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