Form Error Summary

‮A server-rendered summary linking each error to its field.‬

‮Browsers‬: Chrome 123+Firefox 121+Safari 17.5+
‮Tier‬: 0
‮Forced layout budget‬: 0 ms
‮Axe budget‬: 0
‮SSR compatible‬: ‮Yes‬
‮Published contract‬: ‮Test harness‬

‮Playground‬

Form Error Summary

React

CSS

Tailwind

/* Text fields — Input and Textarea share the same surface. Invalid state keys
   off the [data-invalid] attribute the components emit. Textarea autosize uses
   the native field-sizing (Chrome 123+) when the component sets data-autosize. */

@layer components {
  :where([data-uiify-input], [data-uiify-textarea]) {
    display: block;
    inline-size: 100%;
    max-inline-size: 24rem;
    padding-block: var(--space-sm);
    padding-inline: var(--space-md);
    border: var(--border-width) solid var(--input);
    border-radius: var(--radius-md);
    corner-shape: squircle;
    background-color: var(--card);
    color: var(--foreground);
    font-size: var(--uiify-control-text);
    line-height: var(--leading-normal);
    transition: var(--transition-colors);
  }

  :where([data-uiify-input], [data-uiify-textarea])::placeholder {
    color: var(--muted-foreground);
  }

  :where([data-uiify-input], [data-uiify-textarea]):focus-visible {
    border-color: var(--primary);
  }

  :where([data-uiify-input], [data-uiify-textarea]):disabled,
  :where([data-uiify-input], [data-uiify-textarea])[data-disabled] {
    opacity: 0.5;
    cursor: not-allowed;
  }

  :where([data-uiify-input], [data-uiify-textarea])[data-invalid],
  :where([data-uiify-input], [data-uiify-textarea]):user-invalid {
    border-color: var(--destructive);
  }

  :where([data-uiify-input], [data-uiify-textarea])[data-invalid]:focus-visible {
    outline-color: var(--destructive);
  }

  [data-uiify-textarea] {
    min-block-size: 4lh;
    resize: block;
  }

  [data-uiify-textarea][data-autosize] {
    field-sizing: content;
    resize: none;
  }

  [data-uiify-field] {
    display: grid;
    gap: var(--space-sm);
    inline-size: 100%;
    max-inline-size: 24rem;
  }

  [data-uiify-field] [data-part="label"] {
    color: var(--foreground);
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    line-height: var(--leading-normal);
  }

  [data-uiify-field] [data-part="label"][data-required]::after {
    content: " *";
    color: var(--destructive);
  }

  [data-uiify-field] [data-part="description"] {
    margin: 0;
    color: var(--muted-foreground);
    font-size: var(--text-xs);
    line-height: var(--leading-normal);
  }

  [data-uiify-field] [data-part="error"] {
    margin: 0;
    color: var(--destructive);
    font-size: var(--text-xs);
    line-height: var(--leading-normal);
  }

  /* Shared presence fade when an error message is mounted. */
  @media (prefers-reduced-motion: no-preference) {
    [data-uiify-field] [data-part="error"] {
      transition: opacity var(--duration-fast) var(--ease-out);
    }

    @starting-style {
      [data-uiify-field] [data-part="error"] {
        opacity: 0;
      }
    }
  }
}

@layer components {
  [data-uiify-form-error-summary] {
    display: grid;
    gap: var(--space-sm);
    inline-size: 100%;
    max-inline-size: 24rem;
    min-inline-size: 0;
    font-size: var(--text-sm);
    line-height: var(--leading-normal);
    overflow-wrap: anywhere;
    padding-block: var(--space-md);
    padding-inline: var(--space-md);
    border: var(--border-width) solid color-mix(in oklab, var(--destructive) 45%, var(--border));
    border-radius: var(--radius-md);
    corner-shape: squircle;
    background: color-mix(in oklab, var(--destructive) 4%, var(--background));
    color: var(--foreground);
    text-wrap: pretty;
  }

  [data-uiify-form-error-summary] > [data-part="title"] {
    margin: 0;
    font-size: inherit;
    font-weight: var(--weight-semibold);
  }

  [data-uiify-form-error-summary] > [data-part="list"] {
    display: grid;
    gap: var(--space-xs);
    margin: 0;
    padding-inline-start: 1.25em;
  }

  [data-uiify-form-error-summary] a {
    color: var(--destructive);
    text-decoration: underline;
    text-underline-offset: 0.15em;
  }

  [data-uiify-form-error-summary] a:focus-visible {
    outline: var(--ring-width) solid var(--ring);
    outline-offset: 0.2em;
  }
}
/* Example layout; component surfaces use the skins above. */
.example-form, .example-field {
  display: grid;
  box-sizing: border-box;
  inline-size: 100%;
  max-inline-size: 24rem;
  min-inline-size: 0;
  margin: 0;
}
:is(.example-form, .example-field) * { box-sizing: border-box; }
.example-form { gap: 1.5rem; }
.example-field { gap: 0.5rem; }
.example-field > label {
  color: var(--foreground);
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.5;
}
.example-field > [data-uiify-input] { min-block-size: 2.75rem; }
.example-description, .example-error {
  margin: 0;
  font-size: 0.75rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
}
.example-description { color: var(--muted-foreground); }
.example-error { color: var(--destructive); }

import { FormErrorSummary, Input } from "@gunkin/uiify";

export default function Example() {
  return (
    <form className="grid gap-6 [inline-size:100%] [max-inline-size:24rem]" aria-label="Account details">
      <FormErrorSummary
        className="
          grid gap-sm [inline-size:100%] [max-inline-size:24rem] [min-inline-size:0] text-sm
          [line-height:var(--leading-normal)] [overflow-wrap:anywhere] py-md px-md border-[length:var(--border-width)]
          border-solid [border-color:color-mix(in_oklab,_var(--destructive)_45%,_var(--border))] rounded-md
          [corner-shape:squircle] [background:color-mix(in_oklab,_var(--destructive)_4%,_var(--background))]
          text-foreground text-pretty [&>[data-part=title]]:m-0 [&>[data-part=title]]:text-[length:inherit]
          [&>[data-part=title]]:font-[number:var(--weight-semibold)] [&>[data-part=list]]:grid
          [&>[data-part=list]]:gap-xs [&>[data-part=list]]:m-0 [&>[data-part=list]]:[padding-inline-start:1.25em]
          [&_a]:text-destructive [&_a]:underline [&_a]:[text-underline-offset:0.15em]
          [&_a:focus-visible]:[outline:var(--ring-width)_solid_var(--ring)] [&_a:focus-visible]:[outline-offset:0.2em]
        "
        aria-label="Account errors"
        title="There is a problem"
        errors={[
          { href: "#form-error-summary-email", message: "Enter a valid email address" },
          { href: "#form-error-summary-password", message: "Use at least 8 characters" },
        ]}
      />
      <div className="grid gap-2 [min-inline-size:0]">
        <label htmlFor="form-error-summary-email">Email</label>
        <Input
          className="
            focus-visible:[outline:none]
            focus-visible:[box-shadow:0_0_0_var(--ring-width)_color-mix(in_oklch,_var(--ring)_16%,_transparent)] block
            [inline-size:100%] [max-inline-size:24rem] py-sm px-md border-[length:var(--border-width)] border-solid
            border-input rounded-md [corner-shape:squircle] bg-card text-foreground
            [font-size:var(--uiify-control-text)] [line-height:var(--leading-normal)]
            [transition:var(--transition-colors)] placeholder:text-muted-foreground focus-visible:border-primary
            disabled:opacity-50 disabled:cursor-not-allowed data-[disabled]:opacity-50
            data-[disabled]:cursor-not-allowed data-[invalid]:border-destructive user-invalid:border-destructive
            data-[invalid]:focus-visible:outline-destructive
          "
          id="form-error-summary-email"
          invalid
          name="email"
          type="email"
          autoComplete="email"
          defaultValue="alex@"
          aria-describedby="form-error-summary-email-error"
        />
        <p className="m-0 text-xs text-destructive" id="form-error-summary-email-error">
          Enter a valid email address
        </p>
      </div>
      <div className="grid gap-2 [min-inline-size:0]">
        <label htmlFor="form-error-summary-password">Password</label>
        <Input
          className="
            focus-visible:[outline:none]
            focus-visible:[box-shadow:0_0_0_var(--ring-width)_color-mix(in_oklch,_var(--ring)_16%,_transparent)] block
            [inline-size:100%] [max-inline-size:24rem] py-sm px-md border-[length:var(--border-width)] border-solid
            border-input rounded-md [corner-shape:squircle] bg-card text-foreground
            [font-size:var(--uiify-control-text)] [line-height:var(--leading-normal)]
            [transition:var(--transition-colors)] placeholder:text-muted-foreground focus-visible:border-primary
            disabled:opacity-50 disabled:cursor-not-allowed data-[disabled]:opacity-50
            data-[disabled]:cursor-not-allowed data-[invalid]:border-destructive user-invalid:border-destructive
            data-[invalid]:focus-visible:outline-destructive
          "
          id="form-error-summary-password"
          invalid
          name="password"
          type="password"
          autoComplete="new-password"
          defaultValue="pass"
          aria-describedby="form-error-summary-password-error"
        />
        <p className="m-0 text-xs text-destructive" id="form-error-summary-password-error">
          Use at least 8 characters
        </p>
      </div>
    </form>
  );
}

/* app.css */

@layer reset, ui, app, tokens, base, demo, components, utilities, theme;

@import "@gunkin/uiify/styles/reset";

@import "@gunkin/uiify/components/behavior.css";

@import "@gunkin/uiify/styles/tokens";

@import "@gunkin/uiify/styles/tailwind";

@import "tailwindcss/utilities.css";

@theme { --spacing: 0.25rem; --font-weight-normal: 400; --font-weight-medium: 500; --font-weight-semibold: 600; --font-weight-bold: 700; }

@source inline('grid gap-sm [inline-size:100%] [max-inline-size:24rem] [min-inline-size:0] text-sm [line-height:var(--leading-normal)] [overflow-wrap:anywhere] py-md px-md border-[length:var(--border-width)] border-solid [border-color:color-mix(in_oklab,_var(--destructive)_45%,_var(--border))] rounded-md [corner-shape:squircle] [background:color-mix(in_oklab,_var(--destructive)_4%,_var(--background))] text-foreground text-pretty [&>[data-part=title]]:m-0 [&>[data-part=title]]:text-[length:inherit] [&>[data-part=title]]:font-[number:var(--weight-semibold)] [&>[data-part=list]]:grid [&>[data-part=list]]:gap-xs [&>[data-part=list]]:m-0 [&>[data-part=list]]:[padding-inline-start:1.25em] [&_a]:text-destructive [&_a]:underline [&_a]:[text-underline-offset:0.15em] [&_a:focus-visible]:[outline:var(--ring-width)_solid_var(--ring)] [&_a:focus-visible]:[outline-offset:0.2em] focus-visible:[outline:none] focus-visible:[box-shadow:0_0_0_var(--ring-width)_color-mix(in_oklch,_var(--ring)_16%,_transparent)] block py-sm border-input bg-card [font-size:var(--uiify-control-text)] [transition:var(--transition-colors)] placeholder:text-muted-foreground focus-visible:border-primary disabled:opacity-50 disabled:cursor-not-allowed data-[disabled]:opacity-50 data-[disabled]:cursor-not-allowed data-[invalid]:border-destructive user-invalid:border-destructive data-[invalid]:focus-visible:outline-destructive gap-2 gap-6 m-0 text-xs text-destructive');

@layer base { :root { --uiify-control-text: var(--text-sm); } @media (pointer: coarse) { :root { --uiify-control-text: var(--text-base); } } }

/* Authored animation and registered properties used by the Tailwind skin.
 * Visual rules belong in utility recipes; only at-rule definitions live here. */
@layer components {
  @keyframes uiify-presence-in {
    from {
      opacity: 0;
      scale: var(--presence-scale);
    }
  }
}

@layer components {
  @keyframes uiify-presence-out {
    to {
      opacity: 0;
      scale: var(--presence-scale);
    }
  }
}

@property --uiify-spinner-tail {
  syntax: "<angle>";
  inherits: false;
  initial-value: 0deg;
}

@property --uiify-spinner-length {
  syntax: "<angle>";
  inherits: false;
  initial-value: 36deg;
}

@layer components {
  @keyframes uiify-spinner-rotate {
    to {
      transform: rotate(360deg);
    }
  }
}

@layer components {
  @keyframes uiify-spinner-orbit {
    0% {
      --uiify-spinner-tail: 0deg;
      --uiify-spinner-length: 36deg;
    }

    50% {
      --uiify-spinner-tail: 90deg;
      --uiify-spinner-length: 324deg;
    }

    100% {
      --uiify-spinner-tail: 360deg;
      --uiify-spinner-length: 36deg;
    }
  }
}

@layer components {
  @keyframes uiify-skeleton-pulse {
    50% {
      opacity: 0.45;
    }
  }
}

@layer components {
  @keyframes uiify-skeleton-shimmer {
    to {
      background-position: -200% 0;
    }
  }
}

@layer components {
  @keyframes uiify-skeleton-reveal {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }
}

@property --candle-body-height {
  syntax: "<percentage>";
  inherits: true;
  initial-value: 0%;
}

@property --candle-body-top {
  syntax: "<percentage>";
  inherits: true;
  initial-value: 50%;
}

@property --candle-slot {
  syntax: "<percentage>";
  inherits: true;
  initial-value: 100%;
}

@property --candle-wick-height {
  syntax: "<percentage>";
  inherits: true;
  initial-value: 0%;
}

@property --candle-wick-top {
  syntax: "<percentage>";
  inherits: true;
  initial-value: 50%;
}

@property --candle-x {
  syntax: "<percentage>";
  inherits: true;
  initial-value: 0%;
}

@property --candle-scale {
  syntax: "<number>";
  inherits: true;
  initial-value: 1;
}

@property --line-y {
  syntax: "<percentage>";
  inherits: true;
  initial-value: 50%;
}

@property --line-prev-y {
  syntax: "<percentage>";
  inherits: true;
  initial-value: 50%;
}

@property --line-count {
  syntax: "<integer>";
  inherits: false;
  initial-value: 1;
}

@property --line-scale {
  syntax: "<number>";
  inherits: true;
  initial-value: 1;
}

@layer components {
  @keyframes uiify-otp-input-caret-blink {
    50% {
      opacity: 0;
    }
  }
}

‮Examples‬

A single field error

The summary link focuses the matching field. Keep the same error below the field with aria-describedby; the static summary does not announce or move focus automatically.

import { FormErrorSummary, Input } from "@gunkin/uiify";

export default function Example() {
  return (
    <form className="example-form" aria-label="Project details">
      <FormErrorSummary aria-label="Project errors" title="There is a problem" errors={[{ href: "#form-error-summary-single-project", message: "Choose a project name" }]} />
      <div className="example-field">
        <label htmlFor="form-error-summary-single-project">Project name</label>
        <Input id="form-error-summary-single-project" name="project" invalid autoComplete="off" aria-describedby="form-error-summary-single-project-error" />
        <p className="example-error" id="form-error-summary-single-project-error">Choose a project name</p>
      </div>
    </form>
  );
}

‮API‬

`FormErrorSummary`

‮Prop‬	‮Type‬	‮Default‬	‮Description‬
`title`*	`ReactNode`	—	‮Visible heading for the summary.‬
`errors`*	`readonly { href: string; message: ReactNode }[]`	—	‮Each href must target the id of its corresponding field.‬
`className / style / ref / native section props`	`native section props`	—	‮Native section props, styles, events, and ref are forwarded.‬
`render`	`ReactElement \| ((props, state) => ReactElement)`	—	‮Replace the rendered element while keeping behavior and accessibility wiring.‬

‮Keyboard‬

‮Key‬	‮Action‬

‮Accessibility‬

‮Static section containing a heading and links to the supplied error targets. Every href must point to a real field id. This summary adds no alert role, live region, focus movement, or validation logic; fields retain their labels and inline aria-describedby relationships. Empty errors render nothing.‬

‮Styling hooks‬

data-uiify-form-error-summarydata-part="title|list|item|link"

‮Framework‬

‮Style‬

‮Theme‬

‮Language‬

Form Error Summary

‮Playground‬

Form Error Summary

There is a problem

‮Examples‬

A single field error

There is a problem

‮API‬

`FormErrorSummary`

‮Keyboard‬

‮Accessibility‬

‮Styling hooks‬