使用jquery从iframe获取浏览器视区的高度

var iframeContents = $('iframe').contents().find('body');

var iframeHeight = iframeContents.height();

var viewportHeight = $(window).height();

$(document).ready(function() {
  var iframeContents = $('iframe').contents().find('body');
  var iframeHeight = iframeContents.height();
  var viewportHeight = $(window).height();
  
  console.log('iframe高度：', iframeHeight);
  console.log('浏览器视区高度：', viewportHeight);
});