Answer by darhamid for Check if checkbox is checked with jQuery

Something like this can help

togglecheckBoxs =  function( objCheckBox ) {

    var boolAllChecked = true;

    if( false == objCheckBox.checked ) {
        $('#checkAll').prop( 'checked',false );
    } else {
        $( 'input[id^="someIds_"]' ).each( function( chkboxIndex, chkbox ) {
            if( false == chkbox.checked ) {
                $('#checkAll').prop( 'checked',false );
                boolAllChecked = false;
            }
        });

        if( true == boolAllChecked ) {
            $('#checkAll').prop( 'checked',true );
        }
    }
}