Can Data Be Posted via JSONP?

Cross-Domain Data Posting: JsonP vs POST

Question:

Can data be posted via JsonP, or must it always be passed as a GET request in the query string, especially when coping with large data that exceeds query string capacity?

Answer:

Asynchronous JSONP POST Limitation:

Asynchronous POST requests across domains using JSONP are not feasible. The same-origin policy restricts such communication. JSONP's functionality relies on loading scripts from arbitrary domains using <script> tags.

Alternative Options:

Form POST to External Page:

Consider creating a form on another domain and specifying it as the action attribute of a regular form POST. This allows for cross-domain data transfer.

Edit: Hacks Utilizing Iframes:

Complex circumventions involving hidden <iframe> elements and manipulation of their properties exist. However, these approaches are not recommended.

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