模态框（modal）自动居中

// modal对用户可见 $('.modal').on('shown.bs.modal', function () { modalOnResize(this); }) // 浏览器窗口大小改变事件 window.onresize = function(){ // 已显示modal var node = $(".modal:visible"); if (node.length) { modalOnResize(node); } } function modalOnResize(node){ var modalHeight = ($(window).height() - $(node).find('.modal-dialog').height()) / 2; $(node).find('.modal-dialog').css('margin-top', modalHeight); }