SP2013 Resize AppPart iFrames from host page with jQuery

SP2013-AppPart-Iframe-Resizer

// select and loop through all iframes inside of webparts
$('.ms-WPBody iframe').each(function(i, frame) {
	
	// define a variable to hold the new width
	var newWidth;

	// starting with the iframe, search up the DOM for the closest webpart zone
	// then find its width and store it
	newWidth = $(frame).closest('.ms-webpart-zone').width();

	// set the iframe to the new width
	$(frame).width(newWidth);

});