revelcw/ react-hooks-helper
About the developer
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11 Forks 
MIT License 
56 Commits 
5 Opened issues 
Description
A custom React Hooks library that gives you custom hooks for your code.
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Contributors list
react-hooks-helper
A custom React Hooks library that gives you custom hooks for your code.
🧙
useStepis a multi-purpose step wizard. Build an image carousel!📋
useFormfor dead simple form control with nested object support.🚦
useTrafficLighteasily build a fun traffic light component.‼
useNotto simplify togglingtrue/falsewithout lambda functions.🐐 Full 100% test coverage!
🔥 Blazing fast!
Requirement ⚠️
To use
react-hooks-helper, you must use
[email protected].
Installation
$ npm i react-hooks-helper
Usage
const { isPaused, index, step, navigation } = useStep(config);
const [{ foo, bar }, setForm] = useForm({ foo, bar });
const currentValue = useTrafficLight(initialIndex, durations);
const [bar, notBar] = useNot(bool);
Examples
useStep
The new
useStepHook is the new
useTrafficLightand is a more general step wizard. You can use it to simplify many tasks, such as a multi-page input form, or an image carousel.
It has an auto advance function, or control manually by calling
previousand/or
next.
Usage
const { isPaused, index, step, navigation } = useStep(config);
Config
You pass
useStepa configuration object containing the following (* = required).
| Key | Description | | :-------------------- | :-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | |
steps* | Either an array containing the steps to process or an integer specifying the number of steps. | |
initialStep| The starting step—either a string id or an index. Default = 0. | |
autoAdvanceDuration| If you wish the steps to auto-advance, specify the number of milliseconds. You can also include an
autoAdvanceDurationin each
stepin your
stepsarray, if you wish to have different durations for each step. |
Return object
| Key | Description | | :-------------------- | :------------------------------------------------ | |
index| A number containing the current step index. | |
step| The current
stepobject from the
stepsarray. | |
navigation| A
navigationobject (see below). | |
isPaused|
trueif the
autoAdvanceDurationis paused. | |
autoAdvanceDuration| Duration of the current auto-advance. |
Navigation object
The
navigationobject returned from
useStepcontains control callback functions as follows.
| Key | Description | | :--------- | :----------------------------------------------------------------------------------------------------- | |
previous| Call to navigate to the previous item index. Wraps from the first item to the last item. | |
next| Call to navigate to the next item index. Wraps from the last item to the first item. | |
go| Call to navigate to a specific step by
idor by
index. Example:
go(2)or
go('billing-address') |
| pause| Pause auto-advance navigation. | |
play| Play auto-advance navigation once it has been paused. |
Example
There's a simple multi-step control with 3 "pages". You use the "Previous" and "Next" buttons to navigate.
function App() {
const {
index,
navigation: { previous, next },
} = useStep({ steps: 3 });
return (
Hello CodeSandbox
{index === 0 && <div>This is step 1</div>}
{index === 1 && <div>This is step 2</div>}
{index === 2 && <div>This is step 3</div>}
<div>
<button disabled onclick="{previous}">
Previous
</button>
<button disabled onclick="{next}">
Next
</button>
</div>
</div>
);
}
Live demo
You can view/edit a photo carousel on CodeSandbox. It automatically advances after 5 seconds. You can also click previous/next, or navigate directly to a particular image.
useForm
useFormis for an advanced search, sign-up form, etc, something with a lot of text felds, because you only need to use one hook. Wereas on the otherwise you would need many
useStatehooks.
Before
Right here is some code for a sign-up form. As you can see it is using two
useStatehooks and we need a lambda function to change it.
function App() {
const [firstName, setFirstName] = useState("");
const [lastName, setLastName] = useState("");
const [gender, setGender] = useState("Male");
const [isAccept, setAcceptToC] = useState(false);
return (
{
setFirstName(ev.target.value);
}}
/>
{firstName}
{
setLastName(ev.target.value);
}}
/>
{lastName}
{
setGender(ev.target.value);
}}
/>{" "}
Female
{
setGender(ev.target.value);
}}
/>{" "}
Male
Selected Gender: {gender}
{
setAcceptToC(ev.target.checked);
}}
/>{" "}
I accept and agree Terms & Conditions.
);
}
After
function App() {
const [{ firstName, lastName, gender, isAccept }, setValue] = useForm({
firstName: "",
lastName: "",
gender: "Male",
isAccept: false,
});
return (
{firstName}
{lastName}
{" "}
Female
{" "}
Male
Selected Gender: {gender}
{" "}
I accept and agree Terms & Conditions.
);
}
You see
useFormtakes the name of your
inputand changes the object, so you only have to create one
useForm. You can have as many items in the object, and this allows many inputs, but with still one
useForm. And it eliminates the use of a lambda function.
Nest objects
useFormalso supports nested objects. This is useful for things like
billing.cityand
shipping.city.
In your markup, you simply add the dots in the
namefield like this.
Live demo
useTrafficLight
Before
const lightDurations = [5000, 4000, 1000];const BeforeTrafficLight = ({ initialColor }) => { const [colorIndex, setColorIndex] = useState(initialColor);
useEffect(() => { const timer = setTimeout(() => { setColorIndex((colorIndex + 1) % 3); }, lightDurations[colorIndex]); return () => clearTimeout(timer); }, [colorIndex]);
return (
); };
After
const AfterTrafficLight = ({ initialColor }) => {
const colorIndex = useTrafficLight(initialColor, [5000, 4000, 1000]);
return (
);
};
Live demo
useNot
useNotis a toggle function for React components.
Here is a simple App that toggles a value to produce either a blue or a red square.
Before
function App() {
const [value, setValue] = useState(false);
return (
(
setValue( !value )
)}
style={{
width: 100,
height: 100,
backgroundColor: value ? 'red' : 'blue'
}}
/>
);
After
function App() {
const [value, notValue] = useNot(false);
return (
);
}
value
, a boolean, is a variable. notValue
function that nots the value from true
to false
and
vise versa. Notice the notValue
is not a lambda function, like in the before
Live demo
My Coding Journey
On Dec 18, 2017, I did a talk at ReactNYC about the
useTrafficLight
code above, but it was the "before" code and did not use a custom hook, and
certainly not react-hooks-helper
because it was not out yet!
Here's my video.
License
MIT Licensed
Code in the wild
Have you built an app (real or sample) using
react-hooks-helper
? Make a PR and add it to the list below.
Contributors
Thanks goes to these wonderful people (emoji key):
Revel Carlberg West
🚇 ⚠️ 💡 🤔 🚧 👀 🔧 💻
Donavon West
💻 🤔 ⚠️
Sunil Pai
📖
Permadi Wibisono
💻
Jang Rush
📖
This project follows the all-contributors specification. Contributions of any kind welcome!