to pass argument to event handler

[fusillo]

My code pass a value of a variable to the event handler's argument by
means of eval statement

here's:

//statements setting evt
for (var i=0; i<evt.periodi.l ength; i++){
//evt.periodi is an array of objs
a=document.crea teElement("a");
a.onclick=eval( 'function (){ cancellaCal(' + evt.periodi[i].id_evt_cal
+ '); };');
a.appendChild(d ocument.createT extNode("cancel la"));
//another statements
}

Without eval trick evt.periodi[i].id_evt_cal is undefined within handler
function.
Is there a better solution?


Thanks
fusillo

[Lasse Reichstein Nielsen]

fusillo <fu*****@nospam .posi-nega.itwrites:

My code pass a value of a variable to the event handler's argument by
means of eval statement

here's:

for (var i=0; i<evt.periodi.l ength; i++){

....

a.onclick=eval( 'function (){ cancellaCal(' + evt.periodi[i].id_evt_cal
+ '); };');

....

Is there a better solution?

Since you need each function value to have different values for "i",
you need a different variable for each. The simplest way to achieve
that is to create a new scope using a function expression and call
it immediately:

a.onclick = (function(local ){
return function(){ cancellaCal(loc al); };
})(evt.periodi[i].id_evt_cal);

/L
--
Lasse Reichstein Nielsen - lr*@hotpop.com
DHTML Death Colors: <URL:http://www.infimum.dk/HTML/rasterTriangleD OM.html>
'Faith without judgement merely degrades the spirit divine.'

[fusillo]

Lasse Reichstein Nielsen ha scritto:

>
a.onclick = (function(local ){
return function(){ cancellaCal(loc al); };
})(evt.periodi[i].id_evt_cal);

/L

your solution is very cool.
thanks for your help.

fusillo