Bootstrap 3 modal vertical position center

Question

This is a two part question:

1. How can you position the modal vertically in the center when you don\'t know the exact height of the modal?

2. Is

Answer 1

it's not that complicated.

please try this:

$(document).ready(function(){
    var modalId = "#myModal";
    resize: function(){
            var new_margin = Math.ceil(($(window).height() - $(modalId).find('.modal-dialog').height()) / 2);
            $(modalId).find('.modal-dialog').css('margin-top', new_margin + 'px');
    }
    $(window).resize(function(){
        resize();
    });
    $(modalId).on('shown.bs.modal', function(){
        resize();
    });
});