Question

I am making an AJAX call with jQuery to a PHP script that needs to return javascript code embedded in a JSON result for the jQuery code to execute. How do I go about passing javascript code in JSON?

Answer 1

Two ways:

1. You’ll have to pass it as a string and use eval() on the client side.
2. You can use JSONP, and instead of doing a call, have your client side script insert a <script> with its src pointing to the server-side code that returns the new script.

In either case, make sure you secure it well – if the user can somehow insert their own code into your response, they could do some damage.