How can get length on checked checkbox array javascript

Answer 1

var fobj = document.forms[0];

var c = 0;
for (var i = 0; i < formobj.elements.length; i++)
{
if (fobj.elements[i].type == "checkbox")
{
if (fobj.elements[i].checked)
{
c++;
}
}       
}

alert('Total Checked = ' + c);

Answer 2

If you want to use plain javascript

var checkbox = document.getElementsByName('ckbox[]');
var ln = 0;
for(var i=0; i< checkbox.length; i++) {
    if(checkbox[i].checked)
        ln++
}
alert(ln)

Answer 3

Try this,

var ch_n = $( "input:checked" ).length;

Answer 4

var len = $("[name='cbox[]']:checked").length;

will work but will not work if you are directly comparing like

if ( $("[name='cbox[]']").length= $("[name='cbox[]']:checked").length)

Answer 5

You may use as below as well

$('[name=cbox\\[\\]]:checked').length