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react-anchor-without-hash

A anchor react component use url search string without hash. This component solves the problem that hash anchors cannot be used when using the hash router. This is a good solution for projects that need to use hash routing compatible with older browsers (IE9) but want to use anchor points

Online Demo

https://kwzm.github.io/react-anchor-without-hash/

codesandbox

https://codesandbox.io/embed/react-anchor-without-hash-2xq2h

Install

$ npm i react-anchor-without-hash

Usage

scrollIntoView(default)

The effect is the same as scrollIntoView. When url search includes '_to=section1', the section1 will scroll into view area.

import Anchor from 'react-anchor-without-hash'

// ......

<Anchor name="section1">
  <div className="section section1">
    <h2>This is section1</h2>
    <div>There are some text...</div>
  </div>
</Anchor>
<Anchor name="section2">
  <div className="section section2">
    <h2>This is section2</h2>
    <div>There are some text...</div>
  </div>
</Anchor>

scrollTop

The effect is the same as scrollTop. When url search includes '_to=section1', the section1 will scroll into view area with 50px top margin.

note:
1.Because offsetTop is used internally to get the height of the scroll, you need to make sure have a positioned containing element.
2.Interval can allow negative values

import Anchor from 'react-anchor-without-hash'

// ......

const anchorProps = {
  type: 'scrollTop',
  container: '#container',
  interval: 50
}

<div style={{position: 'relative'}}>
  <Anchor name="section1" {...anchorProps}>
    <div className="section section1">
      <h2>This is section1</h2>
      <div>There are some text...</div>
    </div>
  </Anchor>
  <Anchor name="section2" {...anchorProps}>
    <div className="section section2">
      <h2>This is section2</h2>
      <div>There are some text...</div>
    </div>
  </Anchor>
</div>

Options

common options

type: string

Specifies the mechanism for internal execution.

• scrollIntoView: use element.scrollIntoView api
• scrollTop: use element.scrollTop api

anchorKey: string

Url search key for the anchor, default is '_to'.

scrollIntoView options

scrollIntoViewOption: boolean | object

Options passed when scrollIntoView is used.

scrollTop options

container: string

Specifies which element performs scrollTop, if not, scrollTop is set by default using one of the following options:

• document.body.scrollTop
• document.documentElement.scrollTop
• window.pageYOffset

note: This option is the parameter for the document.querySelector, so choose the type it supports.

interval: number

Specifies the distance from the top, which defaults to 0. The actual scrollTop equals:

document.querySelector(container).scrollTop = document.getElementById(anchor).offsetTop + interval

License

MIT