How to check checkbox is checked or not using jquery?

Hi All,

Please use the following code:

How to check checkbox is checked or not using jquery?
function validateMultipleCheck(formId){
    if(formId == undefined){
        var totalInput = $('input:checkbox').length;
    }else{
        var totalInput = $('#'+formId+' input:checkbox').length;
    }
    var checkedValues = '';
    if(totalInput > 0){
        $(":input:checkbox:checked").each(function(){
            checkedValues = checkedValues + ',' + this.value;
        })
    }
    return checkedValues;
}

var values = validateMultipleCheck();
alert(values);


Cheers!