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hyperframes/docs/catalog/components/spring-pop.mdx
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miga-heygenandMiguel Ángel 7b5fdb1ad2 fix(docs): emit catalog source accordion titles as plain strings (#4006) 
The generated catalog pages rendered the "Source" accordion title as a
JSX expression, `<Accordion title={`name.html`}>`. Mintlify's search
indexer stringifies expression attribute nodes rather than evaluating
them, so every one of the 399 catalog pages surfaced its Source section
in search results as "[object Object]" (visible on the Scroll Feed page,
among others).

The template literal carried no escaping benefit: every title is a
single-segment `name.html` path, and a double-quoted JSX string handles
it directly. Introduce `mdxStringAttribute`, which emits a plain
`name="value"` attribute and escapes `& " < { }` as HTML character
references (MDX decodes references inside quoted attribute values, and
unlike JSON.stringify it does not rely on backslash escapes, which JSX
strings do not honour). Use it for both the Source accordion title and
the preview iframe title, and regenerate the catalog pages.

Regenerated with `npx tsx scripts/generate-catalog-pages.ts`; the only
change across the 399 pages is the one Accordion title line each.

Co-authored-by: Miguel Ángel <miguel.sierra@heygen.com>
2026-09-16 11:55:00 -04:00

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---
title: "Spring Pop"
description: "A badge pops in from a visible near-rest scale, overshoots full size once, and settles cleanly."
---
import { InstallCommand } from "/snippets/install-command.jsx";
import { VariablesExplorer } from "/snippets/variables-explorer.jsx";
## Install
<InstallCommand command="npx hyperframes add spring-pop" item="spring-pop" />
That writes one file: `compositions/components/spring-pop.html`.
<VariablesExplorer
previewSrc="/public/catalog/components/spring-pop.json"
compositionId="spring-pop"
compositionSrc="compositions/components/spring-pop.html"
variables={[{"id":"overshoot","type":"number","role":"timing","label":"Overshoot","description":"Strength passed to the back.out entrance curve.","default":1.7,"min":1.1,"max":2,"step":0.1},{"id":"fromScale","type":"number","role":"timing","label":"Starting scale","description":"Scale at the start of the entrance.","default":0.9,"min":0.8,"max":0.97,"step":0.01},{"id":"text","type":"string","role":"content","label":"Label","description":"Text displayed inside the badge.","default":"New"}]}
>
```html spring-pop.html
<!doctype html>
<!--
spring-pop: HyperFrames video primitive (effects / burst / reveal)
Concept: one badge arrives from scale 0.9 and opacity 0, passes slightly
beyond full size, then settles exactly at scale 1. One mechanic, one job:
revealing an element with a restrained, physical overshoot.
Compiled-from evidence: Video Primitives v1 build contract, Easing
vocabulary (--ease-overshoot = GSAP back.out(1.7), taste rules 4 and 5),
plus hyperframes-animation rules/spring-pop-entrance.md's playful
overshoot variation. This fills the gap left by spring-scale-in, whose
power3.out curve never overshoots.
Use when: a new badge, compact card, icon, or product detail deserves one
lively entrance. Keep it to the single element that earns emphasis.
Variables:
- overshoot (number, 1.1 to 2.0, default 1.7): the strength passed to
GSAP back.out(overshoot).
- fromScale (number, 0.8 to 0.97, default 0.9): the visible start scale.
- text (string, default "New"): the badge label.
Envelope: fixed 0.60s IN carries the complete pop, followed by a
deliberately still elastic HOLD. There is no OUT because this reveal
establishes the element's resting state. If duration is shorter than
0.60s, IN compresses to fit and HOLD becomes zero.
Sync point: pop-settle occurs at 0.60s into IN, scaled only when the full
duration is shorter than the fixed entrance. It never enters HOLD.
Sound: none. A parent scene may place a static cue at pop-settle.
Mount contract: the runtime clones only this template. #root fills the
host box, establishes the container query basis, has no data-width or
data-height, and registers one paused timeline under the hardcoded
spring-pop id.
-->
<html
lang="en"
data-composition-variables='[
{ "id": "overshoot", "type": "number", "role": "timing", "label": "Overshoot", "description": "Strength passed to the back.out entrance curve.", "default": 1.7, "min": 1.1, "max": 2, "step": 0.1 },
{ "id": "fromScale", "type": "number", "role": "timing", "label": "Starting scale", "description": "Scale at the start of the entrance.", "default": 0.9, "min": 0.8, "max": 0.97, "step": 0.01 },
{ "id": "text", "type": "string", "role": "content", "label": "Label", "description": "Text displayed inside the badge.", "default": "New" }
]'
>
<head>
<meta charset="UTF-8" />
<title>Spring Pop</title>
</head>
<body>
<template>
<div id="root" data-composition-id="spring-pop" data-duration="2" data-fps="30">
<style>
*,
*::before,
*::after {
box-sizing: border-box;
}
#root {
position: absolute;
inset: 0;
container-type: size;
isolation: isolate;
overflow: hidden;
color: var(--fg, #f8fafc);
font-family: var(--font-body, Inter, system-ui, sans-serif);
pointer-events: none;
}
.sp-clip {
position: absolute;
inset: 0;
display: grid;
place-items: center;
overflow: hidden;
}
/* EDIT ZONE: badge proportions only. The centered 82cqw ceiling
reserves clearance for the overshoot at every allowed value. */
.sp-badge {
display: flex;
align-items: center;
justify-content: center;
gap: var(--space-2, 2.4cqw);
min-width: 48cqw;
max-width: 82cqw;
min-height: 32cqh;
padding: var(--space-2, 2.4cqh) var(--space-3, 4cqw);
border: 0.18cqmin solid var(--border, #334155);
border-radius: var(--radius, 3cqmin);
background: var(--surface, #1e293b);
box-shadow: 0 2.4cqh 7cqh color-mix(in srgb, var(--bg, #0b1120) 42%, transparent);
transform-origin: 50% 50%;
will-change: transform, opacity;
}
.sp-dot {
flex: 0 0 auto;
width: 3.2cqmin;
aspect-ratio: 1;
border-radius: 50%;
background: var(--brand, #22c55e);
box-shadow: 0 0 2.4cqmin color-mix(in srgb, var(--brand, #22c55e) 58%, transparent);
}
.sp-label {
min-width: 0;
overflow: hidden;
color: var(--fg, #f8fafc);
font-family: var(--font-display, Inter, system-ui, sans-serif);
font-size: clamp(14px, 9cqmin, 54px);
font-weight: 720;
line-height: 1.2;
letter-spacing: -0.02em;
text-overflow: ellipsis;
white-space: nowrap;
}
</style>
<div
id="spring-pop-clip"
class="sp-clip clip"
data-start="0"
data-duration="2"
data-track-index="0"
>
<div class="sp-badge">
<span class="sp-dot" aria-hidden="true"></span>
<span class="sp-label"></span>
</div>
</div>
<script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
<script>
(function () {
"use strict";
var root = document.getElementById("root");
var badge = root.querySelector(".sp-badge");
var label = root.querySelector(".sp-label");
var vars =
window.__hyperframes && window.__hyperframes.getVariables
? window.__hyperframes.getVariables()
: {};
// INVARIANT: invalid numeric overrides return to declared
// defaults. Explicit finite checks preserve every valid value.
var overshootValue = vars.overshoot;
var fromScaleValue = vars.fromScale;
var overshoot = Number.isFinite(overshootValue)
? Math.max(1.1, Math.min(2, overshootValue))
: 1.7;
var fromScale = Number.isFinite(fromScaleValue)
? Math.max(0.8, Math.min(0.97, fromScaleValue))
: 0.9;
var text = vars.text == null ? "New" : String(vars.text);
label.textContent = text;
// RETIME RANGE: tune only the fixed entrance length. HOLD is
// deliberately still, and this reveal has no exit phase.
var IN_BASE = 0.6;
var duration = Math.max(0.001, parseFloat(root.dataset.duration || "2"));
var IN = Math.min(IN_BASE, duration);
var OPACITY_IN = Math.min(0.3, IN);
var tl = gsap.timeline({ paused: true });
// --ease-overshoot: the back curve owns the only scale arc. The
// start is 0.9 by default, never 0, so the badge does not appear
// from nothing. Opacity uses its own non-overshooting ease.
tl.fromTo(
badge,
{ scale: fromScale },
{ scale: 1, duration: IN, ease: "back.out(" + overshoot + ")" },
0,
);
tl.fromTo(
badge,
{ opacity: 0 },
{ opacity: 1, duration: OPACITY_IN, ease: "power2.out" },
0,
);
tl.seek(0);
window.__timelines = window.__timelines || {};
window.__timelines["spring-pop"] = tl;
})();
</script>
</div>
</template>
</body>
</html>
```
</VariablesExplorer>
## Paste it into your composition
Open `compositions/components/spring-pop.html` and copy what is inside into your own composition.
A component has no size or duration of its own. It takes both from the composition
you paste it into.
## Variables
Every one of these has a default, so the piece works untouched. Set the ones you
want to change on the element:
| Variable | Default | Accepts | What it does |
| --- | --- | --- | --- |
| `overshoot` | `1.7` | 1.1 to 2, step 0.1 | Strength passed to the back.out entrance curve. |
| `fromScale` | `0.9` | 0.8 to 0.97, step 0.01 | Scale at the start of the entrance. |
| `text` | `New` | string | Text displayed inside the badge. |
Set them with `data-variable-values` on the element that mounts it. These are the
defaults, so this behaves exactly like the preview above until you change one:
```html wrap
<div
data-composition-id="spring-pop"
data-composition-src="compositions/components/spring-pop.html"
data-variable-values='{"overshoot":1.7,"fromScale":0.9,"text":"New"}'
></div>
```
## Source
<Accordion title="spring-pop.html">
```html
<!doctype html>
<!--
spring-pop: HyperFrames video primitive (effects / burst / reveal)
Concept: one badge arrives from scale 0.9 and opacity 0, passes slightly
beyond full size, then settles exactly at scale 1. One mechanic, one job:
revealing an element with a restrained, physical overshoot.
Compiled-from evidence: Video Primitives v1 build contract, Easing
vocabulary (--ease-overshoot = GSAP back.out(1.7), taste rules 4 and 5),
plus hyperframes-animation rules/spring-pop-entrance.md's playful
overshoot variation. This fills the gap left by spring-scale-in, whose
power3.out curve never overshoots.
Use when: a new badge, compact card, icon, or product detail deserves one
lively entrance. Keep it to the single element that earns emphasis.
Variables:
- overshoot (number, 1.1 to 2.0, default 1.7): the strength passed to
GSAP back.out(overshoot).
- fromScale (number, 0.8 to 0.97, default 0.9): the visible start scale.
- text (string, default "New"): the badge label.
Envelope: fixed 0.60s IN carries the complete pop, followed by a
deliberately still elastic HOLD. There is no OUT because this reveal
establishes the element's resting state. If duration is shorter than
0.60s, IN compresses to fit and HOLD becomes zero.
Sync point: pop-settle occurs at 0.60s into IN, scaled only when the full
duration is shorter than the fixed entrance. It never enters HOLD.
Sound: none. A parent scene may place a static cue at pop-settle.
Mount contract: the runtime clones only this template. #root fills the
host box, establishes the container query basis, has no data-width or
data-height, and registers one paused timeline under the hardcoded
spring-pop id.
-->
<html
lang="en"
data-composition-variables='[
{ "id": "overshoot", "type": "number", "role": "timing", "label": "Overshoot", "description": "Strength passed to the back.out entrance curve.", "default": 1.7, "min": 1.1, "max": 2, "step": 0.1 },
{ "id": "fromScale", "type": "number", "role": "timing", "label": "Starting scale", "description": "Scale at the start of the entrance.", "default": 0.9, "min": 0.8, "max": 0.97, "step": 0.01 },
{ "id": "text", "type": "string", "role": "content", "label": "Label", "description": "Text displayed inside the badge.", "default": "New" }
]'
>
<head>
<meta charset="UTF-8" />
<title>Spring Pop</title>
</head>
<body>
<template>
<div id="root" data-composition-id="spring-pop" data-duration="2" data-fps="30">
<style>
*,
*::before,
*::after {
box-sizing: border-box;
}
#root {
position: absolute;
inset: 0;
container-type: size;
isolation: isolate;
overflow: hidden;
color: var(--fg, #f8fafc);
font-family: var(--font-body, Inter, system-ui, sans-serif);
pointer-events: none;
}
.sp-clip {
position: absolute;
inset: 0;
display: grid;
place-items: center;
overflow: hidden;
}
/* EDIT ZONE: badge proportions only. The centered 82cqw ceiling
reserves clearance for the overshoot at every allowed value. */
.sp-badge {
display: flex;
align-items: center;
justify-content: center;
gap: var(--space-2, 2.4cqw);
min-width: 48cqw;
max-width: 82cqw;
min-height: 32cqh;
padding: var(--space-2, 2.4cqh) var(--space-3, 4cqw);
border: 0.18cqmin solid var(--border, #334155);
border-radius: var(--radius, 3cqmin);
background: var(--surface, #1e293b);
box-shadow: 0 2.4cqh 7cqh color-mix(in srgb, var(--bg, #0b1120) 42%, transparent);
transform-origin: 50% 50%;
will-change: transform, opacity;
}
.sp-dot {
flex: 0 0 auto;
width: 3.2cqmin;
aspect-ratio: 1;
border-radius: 50%;
background: var(--brand, #22c55e);
box-shadow: 0 0 2.4cqmin color-mix(in srgb, var(--brand, #22c55e) 58%, transparent);
}
.sp-label {
min-width: 0;
overflow: hidden;
color: var(--fg, #f8fafc);
font-family: var(--font-display, Inter, system-ui, sans-serif);
font-size: clamp(14px, 9cqmin, 54px);
font-weight: 720;
line-height: 1.2;
letter-spacing: -0.02em;
text-overflow: ellipsis;
white-space: nowrap;
}
</style>
<div
id="spring-pop-clip"
class="sp-clip clip"
data-start="0"
data-duration="2"
data-track-index="0"
>
<div class="sp-badge">
<span class="sp-dot" aria-hidden="true"></span>
<span class="sp-label"></span>
</div>
</div>
<script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
<script>
(function () {
"use strict";
var root = document.getElementById("root");
var badge = root.querySelector(".sp-badge");
var label = root.querySelector(".sp-label");
var vars =
window.__hyperframes && window.__hyperframes.getVariables
? window.__hyperframes.getVariables()
: {};
// INVARIANT: invalid numeric overrides return to declared
// defaults. Explicit finite checks preserve every valid value.
var overshootValue = vars.overshoot;
var fromScaleValue = vars.fromScale;
var overshoot = Number.isFinite(overshootValue)
? Math.max(1.1, Math.min(2, overshootValue))
: 1.7;
var fromScale = Number.isFinite(fromScaleValue)
? Math.max(0.8, Math.min(0.97, fromScaleValue))
: 0.9;
var text = vars.text == null ? "New" : String(vars.text);
label.textContent = text;
// RETIME RANGE: tune only the fixed entrance length. HOLD is
// deliberately still, and this reveal has no exit phase.
var IN_BASE = 0.6;
var duration = Math.max(0.001, parseFloat(root.dataset.duration || "2"));
var IN = Math.min(IN_BASE, duration);
var OPACITY_IN = Math.min(0.3, IN);
var tl = gsap.timeline({ paused: true });
// --ease-overshoot: the back curve owns the only scale arc. The
// start is 0.9 by default, never 0, so the badge does not appear
// from nothing. Opacity uses its own non-overshooting ease.
tl.fromTo(
badge,
{ scale: fromScale },
{ scale: 1, duration: IN, ease: "back.out(" + overshoot + ")" },
0,
);
tl.fromTo(
badge,
{ opacity: 0 },
{ opacity: 1, duration: OPACITY_IN, ease: "power2.out" },
0,
);
tl.seek(0);
window.__timelines = window.__timelines || {};
window.__timelines["spring-pop"] = tl;
})();
</script>
</div>
</template>
</body>
</html>
```
</Accordion>
{/* hf:generated-footer */}
Tagged `motion-primitive` `effects` `spring` `overshoot` `pop` `reveal`.
## Related topics
- [Browse the complete Catalog](/catalog)
- [Add assets and Catalog items in Studio](/studio/assets-and-blocks)
- [Build a richer composition](/go-further)
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