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Add Destructure Variables As Props To A Component as a react til

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jbranchaud
2018-02-20 13:03:22 -06:00
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commit f5da3abc60
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@@ -10,7 +10,7 @@ smart people at [Hashrocket](http://hashrocket.com/).
For a steady stream of TILs from a variety of rocketeers, checkout
[til.hashrocket.com](https://til.hashrocket.com/).
_621 TILs and counting..._
_622 TILs and counting..._
---
@@ -430,6 +430,7 @@ _621 TILs and counting..._
- [Alter The Display Name Of A Component](react/alter-the-display-name-of-a-component.md)
- [create-react-app Comes With Lodash](react/create-react-app-comes-with-lodash.md)
- [Defining State In A Simple Class Component](react/defining-state-in-a-simple-class-component.md)
- [Destructure Variables As Props To A Component](react/destructure-variables-as-props-to-a-component.md)
- [Dispatch Anywhere With Redux](react/dispatch-anywhere-with-redux.md)
- [Force A Component To Only Have One Child](react/force-a-component-to-only-have-one-child.md)
- [Inactive And Active Component Styles With Radium](react/inactive-and-active-component-styles-with-radium.md)

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# Destructure Variables As Props To A Component
When passing down props, a redundant-feeling pattern can sometimes emerge.
```javascript
const MyComponent = ({ handleChange, handleBlur }) => {
return (
<div>
<OtherComponent />
<MySubComponent handleChange={handleChange} handleBlur={handleBlur} />
</div>
)
};
```
The typing feel duplicative, as if there ought to be a better way. One
option is to simply pass down all the props:
```javascript
<MySubComponent {...props} />
```
This approach may result in passing down props that we don't intend to pass
down and clutters the flow of data in our app.
Here is another approach:
```javascript
const MyComponent = ({ handleChange, handleBlur }) => {
return (
<div>
<OtherComponent />
<MySubComponent {...{handleChange, handleBlur}} />
</div>
)
};
```
Here we are taking advantage of two ES6 features. Since the naming is the
same, we can use [property
shorthands](http://es6-features.org/#PropertyShorthand). Then we immediately
use the [spread operator](http://es6-features.org/#SpreadOperator) to splat
it back out as the props to the component.
h/t Vidal Ekechukwu