Error on __doPostBack, Object doesn't support property or method 'replace'

[mata123]

My goal is to trigger CheckedChanged event on server side with javascript

this is the function:
<script language="javascript" type="text/javascript">
function confirmation(checkbox) {
if (checkbox.checked == true) {
var answer = confirm('Really confirm ');

if (answer) {
__doPostBack(checkbox, '');
return true;
}
else {
checkbox.checked = false; return false;
}
}
}
</script>

when I get to __doPostBack(checkbox, ''); I get error in the title.
I'm using script manager in asp and when I remove it, all works well, but I need script manager for ajax.

In debug :

_uniqueIDToClientID: function PageRequestManager$_uniqueIDToClientID(uniqueID) {
->> return uniqueID.replace(/\$/g, '_'); here error is thrown


Any advice thx.

[Kor]

What kind of variable is the passed argument checkbox here?:

function confirmation(checkbox)

Should be a DOMElement (an object) by all means. Not a string (that means not the value of a name or id attribute)

[mata123]

ok,

I'm using this function which is triggerd on checkbox click. This is just for test to use an object. Same thing happens, same error


function TestCheckBox() {

var Inputs = TargetBaseControl.getElementsByTagName("input");

for (var n = 0; n < Inputs.length; ++n) {
if (Inputs[n].type == 'checkbox' &&
Inputs[n].id == 'ContentPlaceHolder1_gridviewJobs_cbChecks_2') {

__doPostBack(Inputs[n],'');
return true;
}


}
return false;
}