javascript - Script For Assigning Viewport Meta Parameters, iPhone / iPad Conundrum -


i using javascript snippet set content parameters of viewport meta tag, based on width of browser window. script should: sets initial scale value large screen device 1, ipad in portrait mode 0.5, , devices smaller 700px in screen width, 1. however, seems ignore value assigned ipad in landscape mode: 0.75. suspect somehow incorrectly conditional width in landscape mode. i'm using (width <1100 && width >= 900) (to count ipad's 1024px resolution , provide levee other devices of similar screen sizes) - but on ipad in landscape mode instead shrinks page 0.5 (applying next conditional).

question: modifications necessary make work ipad in landscape mode?

here's snippet:

<script type="text/javascript">  var width = screen.width;  var meta = document.createelement("meta"); var head = document.getelementsbytagname("head")[0];  if (width >= 1100) {       meta.setattribute("name", "viewport");     meta.setattribute("content", "width=device-width, initial-scale=1");     head.appendchild(meta); } else if (width < 1100 && width >= 900) { // ipad in landscape mode     meta.setattribute("name", "viewport");     meta.setattribute("content", "width=device-width, initial-scale=0.75");     head.appendchild(meta); } else if (width < 900 && width >= 700) { // ipad in portrait mode     meta.setattribute("name", "viewport");     meta.setattribute("content", "width=device-width, initial-scale=0.5");     head.appendchild(meta); } else if (width <700) { // smaller 700px in width      meta.setattribute("name", "viewport");     meta.setattribute("content", "width=device-width; initial-scale=1; maximum-scale=1");     head.appendchild(meta); };  </script>


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