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I will soon need to create a widget that some of our customers can embed on their website.

The embed code for my widget will be something like this for future proof: 

  & lt; Script type = "text / javascript" src = "path / to / remote / file.js" & gt; & Lt; / Script & gt; & Lt; Div id = "my_widget" & gt; & Lt; / Div & gt;   
 What are the strengths and weaknesses of iframes versus JSONP?  
 Is there any general SEO issues with IRMs? First, iframes and jsonp are not mutually exclusive: one means rendering one, the second is a communication. It means.  
 Your choice is between the inclusion of the document (which is creating a widget in the host DOM) or in-ifrim (which is a new, different DOM for the widget).  
 The advantage of an iframe is the sandbox: there is no conflict between your widget and the host's javascript and CSS. This means that you can safely:  
     
  •  You want to use / define any javascript library  
  •  Simple HTML with simple CSS rules Use code (which is a clear bonus for maintenance)   
     For drawbacks:  
       
    •  An IFrame is heavy and the host page rendering is seriously  
    •  Iframe also   
       Therefore, if people using your widget Micro believe will be ready to "optimization" is appropriate. For this go on their pages, in-documentary path. If not, then use the iframe, but understand the limitations.  
       For SEO issues, unless you dynamically create a widget (whether it's in-document or with iframe), search engines will not see it. I do not know if you want but this is what you will get;)

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