All components · Category: Navigation

Shrinking header

A header that slims down when the page scrolls and grows back at the top.

Smaller padding, a smaller logo and a soft shadow once the visitor scrolls, and back again at the top, with a small margin so it never flickers at the edge. It can scroll a sample page by itself or follow the window.

Try it

<nav-shrink-header>

ViewPreviewCodeCSS

nav-shrink-header: A header that slims down when the page scrolls and grows back at the top. A picture of the real component, drawn from its own code. The controls change the picture and the code beside it; nothing here is sent or stored.

Generated from the component's manifest and the values above.

index.html

<nav-shrink-header locale="en"></nav-shrink-header>

<script>
  const element = document.querySelector("nav-shrink-header");
  element.addEventListener("nav-shrink-header:compacted", (event) => {
    console.log(event.detail);
  });
</script>

Add the site's Taggor script once; the component appears when it loads.

taggor-component.js

const element = document.createElement("nav-shrink-header");
element.setAttribute("locale", "en");
element.addEventListener("nav-shrink-header:compacted", (event) => {
  console.log(event.detail);
});
document.body.append(element);

Add the site's Taggor script once; the component appears when it loads.

NavShrinkHeader.tsx

import { useEffect, useRef } from "react";

export function NavShrinkHeader() {
  const ref = useRef<HTMLElement>(null);

  useEffect(() => {
    const element = ref.current;
    if (!element) return;
    const onCompacted = (event: Event) => {
      console.log((event as CustomEvent).detail);
    };
    element.addEventListener("nav-shrink-header:compacted", onCompacted);
    return () => {
      element.removeEventListener("nav-shrink-header:compacted", onCompacted);
    };
  }, []);

  return <nav-shrink-header ref={ref} locale="en" />;
}

Add the site's Taggor script once; the component appears when it loads.
React 18 sends every prop of a custom element as a text attribute.
The event is heard with addEventListener, inside an effect.

NavShrinkHeader.tsx

import { useEffect, useRef } from "react";

export function NavShrinkHeader() {
  const ref = useRef<HTMLElement>(null);

  useEffect(() => {
    const element = ref.current;
    if (!element) return;
    const onCompacted = (event: Event) => {
      console.log((event as CustomEvent).detail);
    };
    element.addEventListener("nav-shrink-header:compacted", onCompacted);
    return () => {
      element.removeEventListener("nav-shrink-header:compacted", onCompacted);
    };
  }, []);

  return <nav-shrink-header ref={ref} locale="en" />;
}

Add the site's Taggor script once; the component appears when it loads.
React 19 sets a property when the element already has it, an attribute otherwise.
The event is heard with addEventListener, inside an effect.

src/NavShrinkHeader.vue

<script setup lang="ts">
function onCompacted(event: Event) {
  console.log((event as CustomEvent).detail);
}
</script>

<template>
  <nav-shrink-header locale="en" @nav-shrink-header:compacted="onCompacted" />
</template>

vite.config.ts

import vue from "@vitejs/plugin-vue";
import { defineConfig } from "vite";

export default defineConfig({
  plugins: [
    vue({
      template: {
        compilerOptions: {
          isCustomElement: (tag) => tag === "nav-shrink-header",
        },
      },
    }),
  ],
});

Add the site's Taggor script once; the component appears when it loads.
vite.config.ts tells Vue that this tag is not a Vue component.

src/app/nav-shrink-header.component.ts

import { afterNextRender, Component, CUSTOM_ELEMENTS_SCHEMA, DestroyRef, ElementRef, inject } from "@angular/core";

@Component({
  selector: "app-nav-shrink-header",
  schemas: [CUSTOM_ELEMENTS_SCHEMA],
  template: `
    <nav-shrink-header locale="en"></nav-shrink-header>
  `,
})
export class NavShrinkHeaderComponent {
  constructor() {
    const host = inject<ElementRef<HTMLElement>>(ElementRef);
    const element = () => host.nativeElement.querySelector("nav-shrink-header");
    const onCompacted = (event: Event) => {
      console.log((event as CustomEvent).detail);
    };
    afterNextRender(() => element()?.addEventListener("nav-shrink-header:compacted", onCompacted));
    inject(DestroyRef).onDestroy(() => element()?.removeEventListener("nav-shrink-header:compacted", onCompacted));
  }
}

Add the site's Taggor script once; the component appears when it loads.
The component declares CUSTOM_ELEMENTS_SCHEMA.
The event is heard with addEventListener, inside an effect.

src/TaggorComponent.svelte

<script>
  function onCompacted(event) {
    console.log(event.detail);
  }
</script>

<nav-shrink-header locale="en" onnav-shrink-header:compacted={onCompacted}></nav-shrink-header>

Add the site's Taggor script once; the component appears when it loads.

How an agent gets a component like this onto a site:

taggor checktaggor publish

The CSS variables the component exposes, set the way a customer's page would.

styles.css

nav-shrink-header {
  --ns-radius: 16px;
}

Props

Props of the component, read from its manifest
Prop	Type	Default	What it does
brand	string	Acme Studio	The name on the left.
mode	box \| page	box	box scrolls a sample page inside the component; page follows the window scroll.
compact	boolean	false	Starts compact (the picture of a scrolled page).
locale	pt-BR \| en	en	–

Prop names and descriptions are the component's own, in English, as its author wrote them.

Events

Events of the component, read from its manifest
Event	When it fires
compacted	The header went compact or expanded.

Build one with your agent

Paste this into your agent. It asks you before it signs in, pays or goes further than checking and publishing.

Build me a Taggor component like "Shrinking header" (nav-shrink-header): A header that slims down when the page scrolls and grows back at the top. Fetch https://taggor.dev/agent-setup/prompt.md and follow its instructions to set me up for Taggor. Ask me before you sign in, create an account, accept terms, pay for anything or type a secret. Check it with `taggor check` and publish it with `taggor publish`, and stop there. Do not promote it to production, attach it to a site, roll back anything or use --yes, --force or --force-drop-invalid unless I ask for exactly that in this conversation.

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