Re-center Bootstrap Modal Vertically After Content Has Loaded

I have successfully centered a bootstrap modal using the solution found here: Demo: http://codepen.io/dimbslmh/full/mKfCc Code: http://codepen.io/dimbslmh/pen/mKfCc var contentHeig

Solution 1:

According to the docs there is a method called loaded.bs.modal where the event '...is fired when the modal has loaded content using the remote option.'

So with your code it would be something like this:

$('#myModal').on('loaded.bs.modal', function () {
  var contentHeight = $(window).height() - 60;
  var headerHeight = $(this).find('.modal-header').outerHeight() || 2;
  var footerHeight = $(this).find('.modal-footer').outerHeight() || 2;
});

Here's a fork of that PEN that should work (haven't tested with remote source) http://codepen.io/craigmdennis/pen/fChIm

Update based on comments.

Its showing the modal before it calculates the width & height, then centers it once it's got them. You can't get dimensions from a hidden object as they don't have any until they're displayed. You'll have to add a class to the modal markup so you can set visibility: hidden; and z-index: -99; (so it's invisible and behind any content so not clickable) then remove the class when the loaded.bs.modal event is fired.

In the CSS:

.invisible {
  visibility: hidden;
  position: absolute; /* It will already have a position declaration */z-index: -99;
}

Then in the JavaScript:

$('#myModal').on('loaded.bs.modal', function () {
  var contentHeight = $(window).height() - 60;
  var headerHeight = $(this).find('.modal-header').outerHeight() || 2;
  var footerHeight = $(this).find('.modal-footer').outerHeight() || 2;

  $(this).removeClass('invisible');
});