问题
I would like to call arbitrary js function from gwt. Function name would be inside functionname variable. Something like this:
private static native String execute(String functionName, JavaScriptObject data) /*-{
return $wnd.functionName(data);
}-*/;
I assume that something like this could be possible, but how to create fn variable to represent my arbitrary functionname function.
private static native String execute(JavaScriptObject fn, JavaScriptObject data) /*-{
return fn(data);
}-*/;
回答1:
If you need to invoke function by name, you need to do something like this:
private static native String execute(String functionName,JavaScriptObject data)/*-{
$wnd[functionName](data);
}-*/;
To get reference to a function you will need to use JSNI like this:
private static native JavaScriptObject getFunction(String functionName)/*-{
return $wnd[functionName];
}-*/;
来源：https://stackoverflow.com/questions/8987438/jsni-dynamic-function-reference-in-gwt