Promise. Accessibility is normative (§13). A Level 2+ renderer must keep a labelled control for every active field, move focus to an error summary on failed submit, link each summary entry to its field, and never use a placeholder as the only label. @formscript/render-dom implements that contract for HTML.
A real label
Every active field keeps a labelled control. A placeholder is never the only label, because it vanishes while typing.
Focus moves to the error
A failed submit puts focus on the error summary, and every entry links back to the field that caused it.
Normative, not optional
These are requirements on a renderer, not a plugin you may forget to install before launch.
form loan version = "1.0" {
field first_name {
type = string
required = true
}
field annual_income {
type = number
validate { min = 0 }
}
output {
first_name: string
annual_income: number
}
}
Try a failed submit in the playground: the summary receives focus, and each entry points at its control.
Boundary. Other platforms still need their own renderer that maps the fourteen intents. The obligations travel with the intents.