Computer-implemented methods and systems for dynamically compiling and serving electronic content

A system comprising:

• a computer configured to execute instructions stored in a non-transitory computer-readable medium on one or more devices providing an application for specifying modifications to electronic content,
• the application configured to cause the computer to perform the steps comprising:
• sending a request to a server for electronic content;
• upon receiving the electronic content from the server, providing a preview of the electronic content for display as part of a user interface;
• receiving input at the user interface specifying a modification to the electronic content;
• and
• creating a Uniform Resource Locator (URL) based at least in part on the input specifying the modification, wherein the URL comprises one or more URL parameters which:
• a) identify electronic content from the server,
• b) identify a modification of the electronic content, and
• c) specify selection criteria identifying characteristics of one or more data elements of the electronic content to which the modification is to be applied.

A non-transitory computer-readable medium on which is encoded program code, the program code comprising:

• program code for receiving, at a server, a Uniform Resource Locator (URL) from a requesting client, wherein the URL comprises one or more URL parameters which:
• a) identify electronic content from the server,
• b) identify a modification of the electronic content, and
• c) specify selection criteria identifying characteristics of one or more data elements of the electronic content to which the modification is to be applied;
• program code for, based on the URL, identifying a source file associated with the electronic content;
• program code for, based on the URL, selecting one or more data elements of the source file-program code for, based on the URL, modifying the selected data elements;
• and
• program code for providing modified electronic content for use on the requesting client.