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Alex Rivera
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I've been working on a JS library and would like to setup a demo page on Github that allows, for example, users to define their own callbacks and execute commands. I know " eval() is evil" and I can see how blind eval() of scripts could lead to XSS and other security issues. I'm trying to cook up some alternative schemes. I really enjoy the interactivity of jsFiddle. I've taken a look at their source but was hoping someone could lay out here how jsFiddle allows and executes user-defined JavaScript without being dangerous. So long as it doesn't involve a 3rd party echo server, I'm hoping I can emulate the approach.
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