React Hook Checkbox

An easy to use, all-in-one, minimal setup, React Hook for checkboxes.

Features

• TypeScript Support complete with JSDocs.
• Small Size (<2kb minifed) and Zero Dependencies.
• Select All, Indeterminate, Custom Properties, and Checkbox Nesting.
• Built-in API for State Manipulation.
• Minimal Configuration and Integration necassary.

Demo

Table of Contents

Quickstart | API | Usage | FAQ

Install

npm install react-hook-checkbox

Quickstart

import * as React from "react";

import { useCheckbox } from "react-hook-checkbox";

const config = {
  name: "Shopping List",
  options: [{
    name: "Eggs",
  }, {
    name: "Milk",
  }, {
    name: "Cheese",
  }]
};

const MyPage = () => {

  const [myCheckbox] = useCheckbox(config);

  return (
    <>
      {myCheckbox.options.map((option, index) => {
        return (
          <label key={index} style={{ marginLeft: "15px" }}>
            <input
              type="checkbox"
              checked={option.isSelected}
              onChange={() => option.select()}
            />
            {option.name}
          </label>
        );
      })}
    </>
  );
};

export default MyPage;

API

const checkboxConfig = {...}

Checkboxes are built with a user-provided configuration object hereinafter referred to as checkboxConfig. The checkboxConfig accepts the following parameters:

• name - the name of the checkbox. Defaults to "".
• options - any child checkboxes. Defaults to [].
• properties - properties provided to the checkbox. Defaults to undefined,
• isSelected - true/false if the checkbox is selected. Defaults to false.

* all of these paramers are optional

const [myList, setMyList] = useCheckbox(checkboxConfig)

Creates the checkboxes from the provided checkboxConfig. Returns a React hook.

All checkboxes (myList and its options) share the same properties/functions as described below:

Properties:

• .name - name of the checkbox
• .options - arrary of any child checkboxes. [] if there are none.
• .properties - properties provided to the checkbox.
• .isSelected - true/false if checkbox is selected.
• .ref - refrence to the parent checkbox. undefined if there's no parent.

Note: Remember to follow React's rule's of Hooks when working with .properties.

Functions:

.setCheckbox(config)

Resets and creates a new checkbox on from the provided configuration.
Accepts a checkboxConfig.

.setOptions(options)

Resets the .options to a new set of options from the provided configuration.
Accepts a checkboxConfig[].

.addOption(option)

Adds a child checkbox to .options from the provided configuration.
Accepts a checkboxConfig.

.setIsSelected(isSelected)

Sets the .isSelected of the checkbox.
Accepts a boolean.

.setProperties(properties)

Sets the .properties of the checkbox.
Accepts an any.

.setName(name)

Sets the .name of the checkbox.
Accepts a string.

.getSelectedOptions()

Returns an array of all child checkboxes in which .isSelected is true.

.isIndeterminate()

Returns true/false if the checkbox is indeterminate.

.isAllSelected()

Returns true/false if .isSelected of all child checkboxes is true.

.isAnySelected()

Returns true/false if .isSelected of any child checkbox is true.

.removeOption()

Removes a checkbox from the parent checkbox's .options.

.select()

Selects a single checkbox, inverting the current .isSelected.

Usage

Setting the initial state:

const config = {
  name: 'List',
  isSelected: false,
  properties: { myProperties: "hello world!"},
  options: [{
    name: 'Option 1',
    isSelected: true,
    properties: { myProperties: "fizz!"}
  }, {
    name: 'Option 2',
    isSelected: false,
    properties: { myProperties: "buzz!"}
  }, {
    name: 'Option 3',
    isSelected: true,
    properties: { myProperties: "fizzbuzz!"}
  }]
};

const MyPage = () => {

  const [myCheckbox] = useCheckbox(config);

  return (
    <>
      <p>Will say "FizzBuzz":</p>
      {myCheckbox.options[2].properties.myProperties}
    </>
  );
};

Utilizing default values:

const MyPage = () => {

  // since all paramters are options `{}` is valid use of `useCheckbox()`
  const [myCheckbox] = useCheckbox({});

  return (
    <>
      <p> name is "" by default </p>
      {myCheckbox.name}

      <p> isSelected is false by default </p>
      {myCheckbox.isSelected ? "true" : "false"}
    </>
  );
};

Setting name, options, properties and adding/removing options:

const MyPage = () => {

  const [myCheckbox] = useCheckbox(config);

  const option = {
    name: "new option"
  }

  const options = [{
    name: "new option 1"
  }, {
    name: "new option 2"
  }]

  const newProperties = { myProperties: "new property" };

  // display new list in console on rerender
  console.log(myCheckbox);

  return (
    <>
      <button onClick={() => myCheckbox.setName("new name")}>Set Name</button>
      <button onClick={() => myCheckbox.setProperties(newProperties)}>Set Properties</button>
      <button onClick={() => myCheckbox.addOption(option)}>Add Option</button>
      <button onClick={() => myCheckbox.setOptions(options)}>Set Option</button>
      <button onClick={() => myCheckbox.options[0].removeOption()}>Remove First Option</button>
    </>
  );
};

Display a single set of checkboxes:

const MyPage = () => {

  const [myCheckbox] = useCheckbox(config);

  return (
    <>
      {myCheckbox.options.map((option, index) => {
        return (
          <label key={index} style={{ marginLeft: "15px" }}>
            <input
              type="checkbox"
              checked={option.isSelected}
              onChange={() => option.select()}
            />
            {option.name}
          </label>
        );
      })}
    </>
  );
};

Display all checkboxes recursively:

const MyPage = () => {

  const [myCheckbox] = useCheckbox(config);

  const displayCheckboxex = (checkbox) => {
    return (
      <div style={{ margin: "10px" }}>
        <input
          type="checkbox"
          checked={checkbox.isSelected}
          onChange={() => checkbox.select()}
          ref={input => {
            if (input) {
              input.indeterminate = checkbox.isIndeterminate();
            }
          }}
        />
        {checkbox.name}
        {checkbox.options.map((option, index) => {
          return (
            <div key={index} style={{ marginLeft: "15px" }}>
              {myCheckbox.options.length ?
                displayCheckboxex(option)
                :
                <></>
              }
            </div>
          );
        })}
      </div>
    )
  }

  return (
    <>
      {displayCheckboxex(myCheckbox)}
    </>
  );
};

Usage with TypeScript:

type MyType = string;

const config: CheckboxConfig<MyType> = {
  properties: "fizzbuzz"
};

const MyPage = () => {

  const [myCheckbox] = useCheckbox<MyType>(config);

  return (
    <>
      {myCheckbox.properties}
    </>
  );
};

FAQ

Q: I found a bug, have a suggestion/issue, or need help!

Please raise an issue on the Github repository.

Q: Are you looking for contributors?

Yes! If you'd like to contribute to the project, please raise a pull request.

Q: How can I say thanks?

Feel free to send me an email: nfrederick023@gmail.com