HTML 中的 HTTP 请求方法

Question

Does HTML support the direct programming of custom HTTP requests?

For example, is there is a way to write HTML code that directly instructs the browser to make a custom GET / PUT / POST / DELETE request with custom headers, body and parameters (query string) to a particular endpoint?

Answer 1

No.

In general, HTML can only trigger GET requests. The exception are forms which allow you to make POST requests as well.

You can't have a custom body (forms can encode the data in form fields using one of three encoding methods).

You can't set custom headers.

If by "parameters" you mean "query string", then you can type what you like in a URL (within the constraints of the URL data format).

All those things are possible using JavaScript (via APIs like fetch and XMLHttpRequest ).