Multi-step form

A request form in steps, with a progress bar and a review.

Contact, project and budget in separate steps, with a progress bar that grows, a message under each field that needs fixing, a review before sending and a check that draws itself at the end. You choose which fields go in which step. It stores the request with the visitor's consent.

Try it

<form-multistep>

ViewPreviewCodeCSS

form-multistep: A request form in steps, with a progress bar and a review. 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

<form-multistep locale="en"></form-multistep>

<script>
  const element = document.querySelector("form-multistep");
  element.addEventListener("form-multistep:step", (event) => {
    console.log(event.detail);
  });
  element.addEventListener("form-multistep:submitted", (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("form-multistep");
element.setAttribute("locale", "en");
element.addEventListener("form-multistep:step", (event) => {
  console.log(event.detail);
});
element.addEventListener("form-multistep:submitted", (event) => {
  console.log(event.detail);
});
document.body.append(element);

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

FormMultistep.tsx

import { useEffect, useRef } from "react";

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

  useEffect(() => {
    const element = ref.current;
    if (!element) return;
    const onStep = (event: Event) => {
      console.log((event as CustomEvent).detail);
    };
    element.addEventListener("form-multistep:step", onStep);
    const onSubmitted = (event: Event) => {
      console.log((event as CustomEvent).detail);
    };
    element.addEventListener("form-multistep:submitted", onSubmitted);
    return () => {
      element.removeEventListener("form-multistep:step", onStep);
      element.removeEventListener("form-multistep:submitted", onSubmitted);
    };
  }, []);

  return <form-multistep 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.

FormMultistep.tsx

import { useEffect, useRef } from "react";

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

  useEffect(() => {
    const element = ref.current;
    if (!element) return;
    const onStep = (event: Event) => {
      console.log((event as CustomEvent).detail);
    };
    element.addEventListener("form-multistep:step", onStep);
    const onSubmitted = (event: Event) => {
      console.log((event as CustomEvent).detail);
    };
    element.addEventListener("form-multistep:submitted", onSubmitted);
    return () => {
      element.removeEventListener("form-multistep:step", onStep);
      element.removeEventListener("form-multistep:submitted", onSubmitted);
    };
  }, []);

  return <form-multistep 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/FormMultistep.vue

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

function onSubmitted(event: Event) {
  console.log((event as CustomEvent).detail);
}
</script>

<template>
  <form-multistep
    locale="en"
    @form-multistep:step="onStep"
    @form-multistep:submitted="onSubmitted"
  />
</template>

vite.config.ts

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

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

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/form-multistep.component.ts

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

@Component({
  selector: "app-form-multistep",
  schemas: [CUSTOM_ELEMENTS_SCHEMA],
  template: `
    <form-multistep locale="en"></form-multistep>
  `,
})
export class FormMultistepComponent {
  constructor() {
    const host = inject<ElementRef<HTMLElement>>(ElementRef);
    const element = () => host.nativeElement.querySelector("form-multistep");
    const onStep = (event: Event) => {
      console.log((event as CustomEvent).detail);
    };
    afterNextRender(() => element()?.addEventListener("form-multistep:step", onStep));
    inject(DestroyRef).onDestroy(() => element()?.removeEventListener("form-multistep:step", onStep));
    const onSubmitted = (event: Event) => {
      console.log((event as CustomEvent).detail);
    };
    afterNextRender(() => element()?.addEventListener("form-multistep:submitted", onSubmitted));
    inject(DestroyRef).onDestroy(() => element()?.removeEventListener("form-multistep:submitted", onSubmitted));
  }
}

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 onStep(event) {
    console.log(event.detail);
  }

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

<form-multistep
  locale="en"
  onform-multistep:step={onStep}
  onform-multistep:submitted={onSubmitted}
></form-multistep>

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

form-multistep {
  --ms-radius: 18px;
}

Props

Props of the component, read from its manifest
Prop	Type	Default	What it does
headline	string	none	Replaces the default heading.
fields	list	none	Which field goes in which step (1 to 5); without it: contact, project and budget.
stepTitles	list	none	The title of each step, in order; the review step is added by the form.
privacyPolicy	url	none	Link to the site's privacy policy.
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
step	The visitor reached another step (0 is the first; the review is the last).
submitted	The lead was accepted by Taggor.

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 "Multi-step form" (form-multistep): A request form in steps, with a progress bar and a review. 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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