javascript和webui的交互

I tried it but button.click() triggers onClientClick and not a server event. Try the below solution,

 

1. Assign a bsp:htmlbEvent.

                id   = "fireMyEvent"

                p1   = "p1"

                p2   = "p2" />

 

2. Assign a javascript function to button onClientClick event and trigger it through javascript.

 

                   text          = "Submit"

                   onClientClick = "upload_file( );" />

 

   var button = document.getElementById("<%= controller->component_id %>_mybutton");

   button.focus();

   button.click();

 

3. Inside the function you can trigger server event using fireMyEvent(...)

function upload_file( )

{

....

....

return fireMyEvent('Submit');

}

 

4. In event handler method EH_ONSERVEREVENT, proceed by checking htmlbEvent parameters,

lr_event ?= htmlb_event_ex.

IF lr_event->p1 EQ 'Submit'.

...

Endif.

 

http://www.cnblogs.com/sunrack/archive/2010/01/15/1648787.html

<%@extension name="htmlb" prefix="htmlb" %>
name = "fireMyEvent"
                id   = "fireMyEvent"
                p1   = "p1"
                p2   = "p2" />

<SCRIPT LANGUAGE="JavaScript">
function hotkey()
{
var a=window.event.keyCode;
if((a==65)&&(event.ctrlKey))
{
alert("你按了ctrl+a键吧");
return fireMyEvent('Submit');
}
}
document.onkeydown = hotkey;
SCRIPT>