how to close modal on click code example

Example 1: javascript modal close

$('#closemodal').click(function() {
    $('#modalwindow').modal('hide');
});

Example 2: prevent close modal when click outside

$('#myModal').modal({
    backdrop: 'static',
    keyboard: false
})

or in HTML
<a data-controls-modal="your_div_id" data-backdrop="static" data-keyboard="false" href="#">