I have this JS code that check all the chechboxes am make the sum of their
values.
The checkall function works fine, but when i try to add'em up, the function
that do that, it concatenate them(treat them like string not like numbers I
supose).
This is the code:
<html>
<HEAD>
<SCRIPT LANGUAGE="JavaScript">
var checkflag = "false";
function check(field) {
if (checkflag == "false") {
for (i = 0; i < field.length; i++) {
field[i].checked = true;}
checkflag = "true";
return "Uncheck"; }
else {
for (i = 0; i < field.length; i++) {
field[i].checked = false; }
checkflag = "false";
return "Check All"; }
}
function f(frmObj)
{
var strVal = "";
var el = frmObj.elements;
var nFields = el.length;
for ( n = 0 ; n < nFields ; n++ )
{
if (el[n].type == "checkbox" && el[n].checked)
{
strVal += el[n].value;
}
}
document.form1.how.value = strVal;
}
</script>
</HEAD>
<BODY>
<center>
<form name="form1" action="" method=post>
<table>
<tr><td>
<b>Test</b><br>
<input type="checkbox" name="list" value="1" onClick="f(this.form);">1<br>
<input type="checkbox" name="list" value="2" onClick="f(this.form);">2<br>
<input type="checkbox" name="list" value="3" onClick="f(this.form);">3<br>
<input type="checkbox" name="list" value="4" onClick="f(this.form);">4<br>
<input type="checkbox" name="list" value="5" onClick="f(this.form);">5<br>
<br>
<input type="button" value="Check All"
onClick="this.value=check(this.form.list);f(this.form)">
<input type="text" name="how">
</td></tr>
</table>
</form>
</center>
</body>
</html>
What the .... am i doing wrong?
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