System and method for client-side rewriting of code included in a web page

A method performed by a client computing device, the method comprising:

• receiving, from a proxy computing device, a code rewriting and evaluation function;
• storing the code rewriting and evaluating function in a storage accessible to the client computing device;
• receiving, from the proxy computing device, a first resource comprising:
• a reference to the code rewriting and evaluation function, and
• a call of the code rewriting and evaluation function comprising a code component as an argument thereof;
• accessing the code rewriting and evaluation function stored in the storage;
• and
• causing execution of the call of the code rewriting and evaluation function, the execution causing:
• rewriting of the code component, resulting in a rewritten code component, and
• evaluation of the rewritten code component.

A computer-readable storage medium having programming instructions encoded thereon, the programming instructions structured to cause a processor of a client computing device to perform a method comprising:

• receiving, from a proxy computing device, a code rewriting and evaluation function;
• receiving a modified version of the resource from the proxy computing device, the modified version of the resource comprising a wrapped code component replacing a code component in the resource and comprising a call of the code rewriting and evaluation function, the call comprising the code component as an argument thereof;
• executing the modified version of the resource;
• and
• causing execution of the call, the execution of the call comprising:
• rewriting of the code component, resulting in a rewritten code component, and
• evaluating of the rewritten code component.