title: CORS issue between web/android/ios
body: <p>when trying to $.ajax to fetch some content from other websites in my website, I got the error.</p>
  
  <p>Failed to load <a href="https://www.pinterest.com/" rel="noreferrer">https://www.pinterest.com/</a>: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin '<a href="http://localhost:8100" rel="noreferrer">http://localhost:8100</a>' is therefore not allowed access.</p>
  
  <p>I knew if the target website didn't allow localhost:8100 to fetch the data, I cannot fetch it in the client side on the web.</p>
  
  <p>However, I found that mobile app (not mobile browser, but android/ios application) does not have the issue, they can simply get the website content by their default mobile built-in HTTP get function.</p>
  
  <p>Do i want to ask why mobile will not encounter CORS issue (mobile can fetch the webcontent simply by the built-in http get function)?</p>
  
  <p>thanks.</p>