htmlAppend

Appends the specified content after the existing response body. (This only works for responses with content-type containing html and a status code containing a body (e.g., 200/500).)

⚠️ Note: Requests without a body, such as 204 and 304 responses, are not affected.

Rule Syntax

pattern htmlAppend://value [filters...]

Parameters	Description	Detailed Documentation
pattern	An expression to match against the request URL	Match Pattern Documentation
value	Text or binary content. Supports the following types: • Directory/File Path • Remote URL • Inline/Embedded/Values Content	Operation Instruction Documentation
filters	Optional filters. Supports matching: • Request URL/Method/Headers/Content • Response Status Code/Headers	Filter Documentation

Configuration Example

Inline Method

www.example.com/path htmlAppend://(Hello) file://(-test-)
www.example.com/path2 htmlAppend://(Hello) file://(-test-) resType://js

• Requesting https://www.example.com/path/to results in a response of -test-Hello
• Requesting https://www.example.com/path2/to results in a response of -test-

Inline/Values Method

``` body.txt
Hello world.
```
www.example.com/path htmlAppend://{body.txt} file://(-test-)
www.example.com/path2 htmlAppend://{body.txt} file://(-test-) resType://css

• Requesting https://www.example.com/path/to results in a response of -test-Hello world.
• Requesting https://www.example.com/path2/to results in a response of -test-

Avoiding Non-Standard Requests

When the API response type (Content-Type) is not standardized and returned as text/html, this may result in:

• The front-end mistakenly parsing the API data as HTML
• Injected content corrupts the original data structure
• Triggering front-end parsing errors

Use enable://strictHtml or enable://safeHtml mode to protect non-HTML content:

www.example.com/path1 htmlAppend://(test) file://(-test-) enable://strictHtml
www.example.com/path2 htmlAppend://(test) file://([-test-]) enable://strictHtml
www.example.com/path3 htmlAppend://(test) file://([-test-]) enable://safeHtml
www.example.com/path4 htmlAppend://(test) file://(<div>Test</div>) enable://strictHtml

• Requesting https://www.example.com/path1/to results in a response of -test-
• Requesting https://www.example.com/path2/to results in a response of [-test-]
• Requesting https://www.example.com/path3/to results in a response of [-test-]
• Requesting https://www.example.com/path4/to results in a response of <div>Test</div>test

safeHtml/strictHtml Function reference: enable://safeHtml, lineProps://strictHtml

Local/Remote Resources

www.example.com/path1 htmlAppend:///User/xxx/test.txt
www.example.com/path2 htmlAppend://https://www.xxx.com/xxx/params.txt
# Editing a temporary file
www.example.com/path3 htmlAppend://temp/blank.txt

Associated Protocols

1. Inject content before the response: reqAppend
2. Inject content before HTML-type response content: htmlPrepend
3. Replace HTML-type response content: htmlBody
4. Validate HTML Content format: enable://safeHtml, lineProps://strictHtml