block-code

A fully customizable, one-time password input component for the web built with React

Live demo

Highlights

• Easy to use
• Fully customizable
• React hook first
• Separate logic and ui

Installation and usage

yarn add block-code

Here is a quick example to get you started:

import { FC } from 'react'
import { BlockCode, IBlockCodeProps } from 'block-code'
import 'block-code/style.css'

export const YourComponent: FC<IBlockCodeProps> = props => (
  <BlockCode className="block-code-default" {...props} />
)

BlockCode provides 3 themes built-in: block-code-default, block-code-circular, block-code-underline

import { FC } from 'react'
import { BlockCode, IBlockCodeProps } from 'block-code'
import 'block-code/style.css'

export const YourComponent: FC<IBlockCodeProps> = ({
  children,
  ...restProps
}) => (
  <section>
    <BlockCode className="block-code-circular" {...restProps} />
    {children}
  </section>
)

or custom your style:

import { FC } from 'react'
import { BlockCode, IBlockCodeProps } from 'block-code'
import 'custom.css'

export const YourComponent: FC<IBlockCodeProps> = ({
  children,
  ...restProps
}) => (
  <section>
    <BlockCode className="custom" {...restProps} />
    {children}
  </section>
)

How to catch your data?

import { FC } from 'react'
import { BlockCode, IBlockCodeProps } from 'block-code'
import 'block-code/style.css'

export const YourComponent: FC<IBlockCodeProps> = props => {
  /**
   * @param data - { value, raw, onReset }
   *
   * value: The value after joining: `123456`
   *
   * raw: The raw value: ['1', '2', '3', '4', '5', '6']
   *
   * onReset: A function to reset the state, set value to empty, and set focus index to 0.
   */
  const onComplete = data => {
    // TODO:
    // Use your data here
  }

  return (
    <BlockCode
      className="block-code-default"
      onComplete={onComplete}
      {...props}
    />
  )
}

How to allow only number, or validate your data before adding into the state?

import { FC } from 'react'
import { BlockCode, IBlockCodeProps, isNumber } from 'block-code'
import 'block-code/style.css'

export const YourComponent: FC<IBlockCodeProps> = props => {
  const onValidateBeforeChange = async data => {
    /**
     * If `isNumeric` returns true, then the value will be added into the state
     *
     * You can use any condition here, `onValidateBeforeChange` asks for `Promise<boolean>`
     */
    return isNumeric(data.value)
  }

  return (
    <BlockCode
      className="block-code-default"
      onValidateBeforeChange={onValidateBeforeChange}
      {...props}
    />
  )
}

How to disable inputs?

BlockCode allows you to pass down input props

import { FC } from 'react'
import { BlockCode, IBlockCodeProps, isNumber } from 'block-code'
import 'block-code/style.css'

export const YourComponent: FC<IBlockCodeProps> = props => {
  return (
    <BlockCode
      className="block-code-default"
      inputProps={{
        disabled: true
      }}
      {...props}
    />
  )
}

How to custom my component?

BlockCode separates logic into hook useBlockCode. You can use it to custom your component

import { VFC } from 'react'
import { IBlockCodeProps, useBlockCode } from 'block-code'

export const YourComponent: VFC<IBlockCodeProps> = props => {
  const { className, ...restProps } = props
  const { ids, onCreateInputProps } = useBlockCode(restProps)

  return (
    <div className={className}>
      {ids.map((id, index) => (
        <input key={id} {...onCreateInputProps(index)} />
      ))}
    </div>
  )
}

The useBlockCode hook accept props same as BlockCode component which is IBlockCodeProps. It returns:

values,
setValues,
setActiveIndex,
refs,
onSetValueAtIndex,
onSetActiveIndex,
onResetValues,
onReset,
onPaste,
onNextFocusAfterChangingValue,
onKeyDown,
onInput,
onEnoughData,
onCreateRef,
onCreateInputProps,
onCheckValue,
onAfterAddingValue,
onAddValue,
initState,
initActiveIndex,
ids,
activeIndex

API

• maxInputs - Number of inputs to be rendered.
  • Default: 6
• inputProps - Input props will be passed into <input />
  • Default:

    {
      "maxLength": 1,
      "className": "input"
    }

• autoFocus - Auto focus on the first input
  • Default: true
• onValuesChange - A function will be called when the value got changed
  • Default: none
• onInputChange - A function will be called when onInput and onKeyDown got triggered
  • Default: none
• onValidateBeforeChange - A function will be called to validate the value before adding into state. If you don't provide validate function, all values will be allowed
  • Default: none
• onComplete - A function will be called only when the data is enough. It will pass the data to you. The data is enough when fits the condition below:
  • maxInputs * inputProps.maxLength. For example maxnInputs is 6 and inputProps.maxLength is 1. The onComplete will be triggered if the value has length is 6
  • Default: none

License

This project is licensed under the terms of the MIT license.