Chapter 10 Messages, Workers, and Sockets
Remy Sharp
WEB MESSAGING, Web Workers, and Web Sockets are all different APIs but all have the same communication API, which is why I will show you all three together. Only the Messaging API is part of the official HTML5 spec, but all three of these APIs are valuable additions to any web application.
Messaging allows for sending messages from one domain to another, something that Ajax security policies have long prevented—for good reason—but is now starting to open up with the right security measurements in place.
NOTE The new XMLHttpRequest level 2 object (http://www.w3.org/TR/XMLHttpRequest2/), out ...
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