I have an editable ajax table , and have a "unlock" field with a checkbox for every row.
When I check the chekbox I need to get the value 1 ( I'm ok for this part ! :)
My code to get the value of the cheked box:
( $("#unlock_input_" + ID).val(); ) )
But when I uncheck one of any checkbox , I need to get the value 0 ( I need help for this part)
So.... How can I do that in jquery ? Thx
You could throw on a :checked selector. Then you'll get back undefined when the box is unchecked, which is falsey, so:
var result = $("#unlock_input_" + ID + ":checked").val() || 0;
result will end up with the value of the checkbox if it's checked, or 0 if not, because of the way JavaScript's curiously-powerful || operator works.
Another way to write it:
var result = $("#unlock_input_" + ID).filter(":checked").val() || 0;
Or of course, the rather more direct:
var cb = $("#unlock_input_" + ID)[0],
result = cb.checked ? cb.value : 0;
:checked selector).
? : route :):checked is definitely going to perform worse than my last alternative above, but of course, unless you're in a tight loop, it doesn't matter. So it's horses for courses... :-) (What I do in my projects is use an extension method I add called checkedVal, which returns the value if checked using an efficient means or returns undefined if unchecked.)change your code to this (using prop to ask for the checked-property):
var result = $("#unlock_input_" + ID).prop('checked')?1:0;
EDIT:
if you explicitly need the value instead of 1, just do:
var element = $("#unlock_input_" + ID);
var result = element.prop('checked')?element.val():0;
You can use the checked property of the checkbox to decide whether 1 or 0. Try this
if($("#unlock_input_" + ID)[0].checked){
alert("1");
}
else{
alert("0");
}
Alertnatively you can use jQuery is method to check whether the checkbox is checked or not.
if($("#unlock_input_" + ID).is(":checked")){
alert("1");
}
else{
alert("0");
}
.is(":checked") shudder ;-) If you're going to branch, I'd definitely branch your first way unless there's some possibility the checkbox won't exist.You could check if it's chekced
if($("#unlock_input_" + ID).is(':checked')){
myVal = "1";
}
else{
myVal = "0";
}
