Any developer that has been through the ringer before knows the pain that comes from undoing the hard work of developing back-end code and creating awesome UIs when stakeholders change the vision of their project. Instead of suffering this cruel fate, developers can utilize tools that allow them to prototype their design. This way, UIs can be changed by stakeholders before developers start coding, thus saving lots of time and effort.
Did you know it was possible to access the Windows Azure Blob Storage directly from JavaScript, for example using jQuery? At first, it sounds obvious, since Blobs are after all accessible from a public UR. But in practice, there is a very big hurdle: the Web browser’s Same Origine Policy or SOP, that restricts JavaScript code to accessing resources originating from the same site the script was loaded from. This means that you will never be able to load a Windows Azure Blob using XMLHttpRequest for example! Fortunately, there is a popular workaround called JSONP (“JSON with Padding”). The idea behind this technique is that the script tag is not submitted to the SOP: an HTML page can thus load a JavaScript file from any site. So, if you expose your data in an “executable” form in JavaScript, a page will be able to load this data using a script tag. For example: <script type=”text/javascript” src=”http://www.sandeepknarware.in/exemple.jsonp”> </script> But how can ...
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