hidden=until-found Find-In-Page Lookup
Bounded HTML feature/convention note; no full document audit or live browser compatibility determination.
Description
hidden=until-found Find-In-Page Lookup: look up a supported built-in reference entry.
A hidden-until-found element can participate in browser-driven revelation under supported HTML behavior. That differs from ordinary always-hidden content.1
This tool returns a built-in reference entry for an exact supported selector. The supported entries and their scope are part of the tool; no website or current external table is queried.
When to use this tool
Use this tool when the supplied inputs match the specific operation described above and you need a repeatable result under its stated convention.
- Check the supported input and output contract against an existing calculation or observation.
- Use the complete example to confirm units, selector spelling and result interpretation.
How to use the tool and how it works
- Enter every field in the input table using the stated units and the exact supported selector spelling where applicable.
- Run the tool. Correct input errors before interpreting an output.
- Read the result fields below; use accompanying flags and the stated sign, boundary or model convention when interpreting a number.
Accept until-found and return the built-in find-in-page and beforematch note.2
| Input field | Meaning and units | Accepted input |
|---|---|---|
| topic | Topic. | Exact value: "until-found" |
| topic | Built-in entry |
|---|---|
| "until-found" | hidden="until-found" can allow find-in-page/fragment reveal with beforematch in supporting browsers; rendering/style and support constraints remain. |
| Output field | Interpretation |
|---|---|
| result | Object containing the following named result fields. |
| result.reference | The stored entry for the exact selected key; its type may be text, a number or a list. |
{
"input": {
"topic": "until-found"
},
"output": {
"result": {
"reference": "hidden=\"until-found\" can allow find-in-page/fragment reveal with beforematch in supporting browsers; rendering/style and support constraints remain."
}
}
}Limitations and assumptions
- The lookup does not test browser support, event handlers, CSS or whether a particular document will reveal the element.
- Every declared field is required and unexpected fields are rejected. Numeric inputs must be finite; input errors are distinct from a valid false result or an explicitly qualified output.
- Extremely large inputs and nonfinite or excessively large outputs are rejected. List positions reported by the tool use zero-based indices unless stated otherwise.
Alternative or Complementary methods
Check the underlying observations, units and conventions independently before using the result in a larger workflow. The tools listed below address nearby tasks; compare their inputs and scope before substituting one for this operation.
References
Similar or alternative tools
- Single h1 Per Page Rule Check
Explicit caller observed h1 count against a one-h1 style rule; not a HTML parsing, standard validity or accessibility certification.
- abbr title A11y Note Lookup
Bounded HTML feature/convention note; no full document audit or live browser compatibility determination.