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check outerwidth


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<!DOCTYPE html>

<p>Display "iphone" if the outherWidth is equal or less than 320px</p>

<p id="demo">desktop</p>


function checkOuterWidth(){

var w = window.outerWidth;
if (w <= 320) {
   document.getElementById("demo").innerHTML = "iphone";
else {
   document.getElementById("demo").innerHTML = "desktop";


i am trying to write a function to detect the browser width and, based on that, have two different results. I have looked at some examples and tried to reproduce some tutorials but at the moment it doesn't work ... suggestions and corrections are very welcome

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