jquery mobile - How to check if jQM popup fits user's viewport? -

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so i've managed add scrollbars large jqm popups css('overflow-y', 'scroll'). how only when popup larger user's viewport?

i'm trying jquery-visible plugin can't respond:

http://jsfiddle.net/mmrnq/124/

$('#test-button').on('click', function(e) {        $('#confirmdialog').popup('open');    // https://stackoverflow.com/questions/20791374/jquery-check-if-element-is-visible-in-viewport      if(!$('#confirmdialog').visible(true)) {     alert('popup not visible - add overflow scrolling');     $('#confirmdialog').css('overflow-y', 'scroll');    }   });

you can use 

overflow-y: auto

this makes scrollbar visible when needed.

updated fiddle

update:

you can make content of popup scrollable titlebar remains in view:

#confirmdialog .ui-content {     overflow-y: auto; }  $('#confirmdialog').on({   popupbeforeposition: function() {       var maxheight = $(window).height() - 120;       $('#confirmdialog .ui-content').height(maxheight);   } });

demo


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