Anchor

Hyperlinks to scroll on one page.

When To Use#

For displaying anchor hyperlinks on page and jumping between them.

Examples

The simplest usage.

TypeScript
JavaScript
import { Anchor } from 'infrad';
import React from 'react';

const { Link } = Anchor;

const App: React.FC = () => (
  <Anchor>
    <Link href="#components-anchor-demo-basic" title="Basic demo" />
    <Link href="#components-anchor-demo-static" title="Static demo" />
    <Link href="#API" title="API">
      <Link href="#Anchor-Props" title="Anchor Props" />
      <Link href="#Link-Props" title="Link Props" />
    </Link>
  </Anchor>
);

export default App;

Customize the onClick event

Clicking on an anchor does not record history.

TypeScript
JavaScript
import { Anchor } from 'infrad';
import React from 'react';

const { Link } = Anchor;

const handleClick = (
  e: React.MouseEvent<HTMLElement>,
  link: {
    title: React.ReactNode;
    href: string;
  },
) => {
  e.preventDefault();
  console.log(link);
};

const App: React.FC = () => (
  <Anchor affix={false} onClick={handleClick}>
    <Link href="#components-anchor-demo-basic" title="Basic demo" />
    <Link href="#components-anchor-demo-static" title="Static demo" />
    <Link href="#API" title="API">
      <Link href="#Anchor-Props" title="Anchor Props" />
      <Link href="#Link-Props" title="Link Props" />
    </Link>
  </Anchor>
);

export default App;

Set Anchor scroll offset

Anchor target scroll to screen center.

TypeScript
JavaScript
import { Anchor } from 'infrad';
import React, { useEffect, useState } from 'react';

const { Link } = Anchor;

const App: React.FC = () => {
  const [targetOffset, setTargetOffset] = useState<number | undefined>(undefined);

  useEffect(() => {
    setTargetOffset(window.innerHeight / 2);
  }, []);

  return (
    <Anchor targetOffset={targetOffset}>
      <Link href="#components-anchor-demo-basic" title="Basic demo" />
      <Link href="#components-anchor-demo-static" title="Static demo" />
      <Link href="#API" title="API">
        <Link href="#Anchor-Props" title="Anchor Props" />
        <Link href="#Link-Props" title="Link Props" />
      </Link>
    </Anchor>
  );
};

export default App;

Do not change state when page is scrolling.

TypeScript
JavaScript
import { Anchor } from 'infrad';
import React from 'react';

const { Link } = Anchor;

const App: React.FC = () => (
  <Anchor affix={false}>
    <Link href="#components-anchor-demo-basic" title="Basic demo" />
    <Link href="#components-anchor-demo-static" title="Static demo" />
    <Link href="#API" title="API">
      <Link href="#Anchor-Props" title="Anchor Props" />
      <Link href="#Link-Props" title="Link Props" />
    </Link>
  </Anchor>
);

export default App;

Customize the anchor highlight

Customize the anchor highlight.

TypeScript
JavaScript
import { Anchor } from 'infrad';
import React from 'react';

const { Link } = Anchor;

const getCurrentAnchor = () => '#components-anchor-demo-static';

const App: React.FC = () => (
  <Anchor affix={false} getCurrentAnchor={getCurrentAnchor}>
    <Link href="#components-anchor-demo-basic" title="Basic demo" />
    <Link href="#components-anchor-demo-static" title="Static demo" />
    <Link href="#API" title="API">
      <Link href="#Anchor-Props" title="Anchor Props" />
      <Link href="#Link-Props" title="Link Props" />
    </Link>
  </Anchor>
);

export default App;

Listening for anchor link change

Listening for anchor link change.

TypeScript
JavaScript
import { Anchor } from 'infrad';
import React from 'react';

const { Link } = Anchor;

const onChange = (link: string) => {
  console.log('Anchor:OnChange', link);
};

const App: React.FC = () => (
  <Anchor affix={false} onChange={onChange}>
    <Link href="#components-anchor-demo-basic" title="Basic demo" />
    <Link href="#components-anchor-demo-static" title="Static demo" />
    <Link href="#API" title="API">
      <Link href="#Anchor-Props" title="Anchor Props" />
      <Link href="#Link-Props" title="Link Props" />
    </Link>
  </Anchor>
);

export default App;

API#

Anchor Props#

Property	Description	Type	Default
affix	Fixed mode of Anchor	boolean	true
bounds	Bounding distance of anchor area	number	5
getContainer	Scrolling container	() => HTMLElement	() => window
getCurrentAnchor	Customize the anchor highlight	(activeLink: string) => string	-
offsetTop	Pixels to offset from top when calculating position of scroll	number	0
showInkInFixed	Whether show ink-balls when `affix={false}`	boolean	false
targetOffset	Anchor scroll offset, default as `offsetTop`, example	number	-
onChange	Listening for anchor link change	(currentActiveLink: string) => void
onClick	Set the handler to handle `click` event	function(e: Event, link: Object)	-

Link Props#

Property	Description	Type
href	The target of hyperlink	string
target	Specifies where to display the linked URL	string
title	The content of hyperlink	ReactNode