resize - Using jQuery To Get Size of Viewport -

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How can I use jQuery to determine the size of the browser viewport, and if the page has been resized So to get it back? I need to make this IFRAM size in this space (each margin is coming slightly).

People who do not know, the browser viewport is not the size of the document / page. It is the visible size of your window before scrolling.

To get the width and height of the viewport: 

  var Viewportwidth = $ (window). With (); Var vorteights = $ (window). height ();

Resize the position of the page: 

  $ (window). Resize (function () {});

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