如何从gwt调用jquery触发器?-Howtocalljquerytriggerfromgwt?

12  

I had similar issues when using jQuery UI with GWT - no errors in console/dev mode, yet the code did not behave like I wanted. The reason was that jQuery (and such frameworks) extend/change many core elements of Javascript and expect it to stay that way - however, GWT code (meaning, also JSNI stuff) is executed from a "clean" iframe (so that no external frameworks can mess with the language and cause some weird errors in GWT, that's why you have to reference to the main window via $wnd).

在使用GWT的jQuery UI时，我遇到了类似的问题——在控制台/dev模式中没有错误，但是代码没有像我想的那样运行。原因是jQuery(框架)扩展/改变许多核心元素的Javascript和希望它继续这样下去——然而,GWT代码(意义,也JSNI的东西)执行从一个“干净”的iframe(这没有外部框架能惹语言和导致GWT一些奇怪的错误,这就是为什么你必须引用主窗口通过$ wnd)。

I'd suggest moving your doConnect function to the host page (or external js file linked to the host page) and instead just call that function from your JSNI stub:

我建议将doConnect函数移动到主机页面(或连接到主机页面的外部js文件)，而只需从JSNI存根调用该函数:

public static native void doConnect() /*-{
   $wnd._doConnect('sss','sss'); //_doConnect defined in the host page
}-*/;

Or provide helper functions that will return Arrays, etc, from the host page, so that they include all the changes that jQuery made and expects.

或者提供从主机页面返回数组等的助手函数，以便包含jQuery所做的和期望的所有更改。

4  

It's a bit late for this answer, but your original code did not work due to a simple mistake: You have properly used $win instead of window but a few characters later you have used document instead of $doc :)

这个答案有点晚了，但是您的原始代码由于一个简单的错误而无法工作:您正确地使用了$win而不是window，但是稍后您使用了一些字符，而不是$doc:)

public static native void doConnect() /*-{
    $wnd.jQuery($doc).trigger($wnd.jQuery.Event('connect', {
        jid: 'sss',
        password: 'sss'
    }));
}-*/;