Re: Passing Object Literal to Javascript method ?

if (command != null) ?

On Friday, October 4, 2013 3:01:04 PM UTC+2, Ed wrote:

What is the correct way to check if a java object is not null in javascript?

Exampe:

private native  performIntern(JsArray<? extends Element> elements, int duration, JavaScriptObject options,  HasOnComplete command) /*-{

                var func = null;

if (typeof  command !== 'undefined') { 

func = function() {

command.@com.bla.HasOnComplete::onComplete()(); 

}

}

return $wnd._CMod.perform(elements, duration, options,  func);  

}-*/;

It will never enter the if if the command isn't null :(..

I also tried things like "if (command)" or first assign command to another variable... but no luck and can't seem to find a matching example in code some where. I noticed that GWT uses a global function "defined()" in for example JavaScriptObject, but no idea where to find the source.

BTW: the if is entered if I do something like "if (duration > 0)"..... such that the command is called...

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