Aggregating plug-in requests for improved client performance

1. A non-transitory computer-readable storage media comprising instructions operable when executed to:

in response to loading a document object model (DOM), identify a plurality of supported tags in the DOM, wherein:

each of the supported tags represents a request to retrieve a dedicated object from a server of a social-networking system and instructions to generate a frame for display on a webpage; and

each of the requests is operable to retrieve a dedicated object from the social-networking system, the dedicated object being executable on the webpage to access information from the social-networking system or to perform an action on the social-networking system;

generate a placeholder frame for each of the supported tags;

generate a unique identifier for each of the placeholder frames;

combine the requests into a single request, wherein the single request is associated with a hidden frame that comprises the unique identifier of each placeholder frame and one or more parameters associated with each placeholder frame;

send the single request to the server of the social-networking system;

progressively receive, in response to the single request, one or more dedicated objects from the server of the social-networking system; and

populate the placeholder frames with the dedicated objects.

2. The media of claim 1 , wherein each dedicated object comprises a JSON object or other HTML DOM object.

3. The media of claim 2 wherein each JSON object comprises a CSS file, HTML file, and JavaScript code.

4. The media of claim 1 , wherein each of the placeholder frames comprises a cached asset.

5. The media of claim 1 , wherein the placeholder frames each comprise an asset obtained from a domain having the same top-level domain as the server of the social-networking system.

6. A device comprising:

one or more processors;

one or more communication interfaces;

memory comprising instructions operable when executed by the one or more processors to:

receive a document request from a remote host;

transfer, through the one or more communications interfaces, the requested document, the requested document comprising a set of instructions to the remote host, the requested document further comprising a set of supported tags,

wherein the set of instructions is operable, when executed by the remote host, to:

in response to loading a document object model (DOM) for the requested document, identify the supported tags in the DOM, wherein:

each of the plug in calls supported tags represents a request to retrieve a dedicated object from a server of a social-networking system and instructions to generate a frame for display on a webpage; and

each of the requests is operable to retrieve a dedicated object from the social-networking system, the dedicated object being executable on the webpage to access information from the social-networking system or to perform an action on the social-networking system;

generate a placeholder frame for each of the supported tags;

generate a unique identifier for each of the placeholder frames;

combine the requests into a single request, wherein the single request is associated with a hidden frame that comprises the unique identifier of each placeholder frame and one or more parameters associated with each placeholder frame;

send, via the one or more communication interfaces, the single request to the server of the social-networking system;

progressively receive, in response to the single request, one or more dedicated objects from the server of the social-networking system; and

populate the placeholder frames with the dedicated objects.

7. The device of claim 6 , wherein each dedicated object comprises a JSON or other HTML DOM object.

8. The device of claim 7 , wherein each JSON object comprises a CSS file, HTML file, and JavaScript code.

9. The device of claim 6 , wherein each of the placeholder frames comprises a cached asset.

10. The device of claim 6 , wherein the placeholder frames each comprise an asset obtained from a domain having the same top-level domain as the server of the social-networking system.

11. A method comprising, by one or more computing systems:

in response to loading a document object model (DOM), identifying a plurality of supported tags in the DOM, wherein:

each of the supported tags represents a request to retrieve a dedicated object from a server of a social-networking system and instructions to generate a frame for display on a webpage; and

each of the requests is operable to retrieve a dedicated object from the social-networking system, the dedicated object being executable on the webpage to access information from the social-networking system or to perform an action on the social-networking system;

generating a placeholder frame for each of the supported tags;

generating a unique identifier for each of the placeholder frames;

combining the requests into a single request, wherein the single request is associated with a hidden frame that comprises the unique identifier of each placeholder frame and one or more parameters associated with each placeholder frame;

sending the single request to the server of the social-networking system;

progressively receiving, in response to the single request, one or more dedicated objects from the server of the social-networking system; and

populating the placeholder frames with the dedicated objects.

12. The method of claim 11 , wherein each dedicated object comprises a JSON object or other HTML DOM object.

13. The method of claim 12 wherein each JSON object comprises a CSS file, HTML file, and JavaScript code.

14. The method of claim 11 , wherein each of the placeholder frames comprises a cached asset.

15. The method of claim 11 , wherein the placeholder frames each comprise an asset obtained from a domain having the same top-level domain as the server of the social-networking system.