mirror of
https://github.com/kay-is/react-from-zero.git
synced 2026-04-24 03:00:06 -04:00
9fa426903f
* added spaish translation * added the result of a map call, to clarify where is the array, and how the map function works. * fixed the word components
52 lines
1.5 KiB
HTML
52 lines
1.5 KiB
HTML
<!doctype html>
|
|
|
|
<title>05 Properties - React From Zero</title>
|
|
|
|
<script src="https://unpkg.com/react@16.4.0/umd/react.development.js"></script>
|
|
<script src="https://unpkg.com/react-dom@16.4.0/umd/react-dom.development.js"></script>
|
|
<script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
|
|
|
|
<div id="app"></div>
|
|
|
|
<script type="text/babel">
|
|
// Components, like elements, can use properties, too
|
|
function MyComponent(props) {
|
|
return (
|
|
<div className={props.className}>
|
|
<h1>Hello</h1>
|
|
<h2>{props.customData}</h2>
|
|
</div>
|
|
)
|
|
}
|
|
|
|
var reactElement = <MyComponent className="abc" customData="world"/>
|
|
|
|
// Which also works with an object and the spread (...) operator
|
|
var props = {
|
|
className: "abc",
|
|
customData: "world",
|
|
}
|
|
|
|
reactElement = <MyComponent {...props}/>
|
|
|
|
// This allows components with dynamic content
|
|
var planets = ["earth", "mars", "venus"]
|
|
|
|
// If an array is used as a "child node" each child needs a unique key-property
|
|
// This map call will return an array of components, like this example:
|
|
// [
|
|
// <MyComponent className="myClass" customData={"earth"} key={0}/>,
|
|
// <MyComponent className="myClass" customData={"mars"} key={1}/>,
|
|
// <MyComponent className="myClass" customData={"venus"} key={2}/>
|
|
// ]
|
|
var elements = planets.map(function(planet, index) {
|
|
return <MyComponent className="myClass" customData={planet} key={index}/>
|
|
})
|
|
|
|
reactElement = <div>{elements}</div>
|
|
|
|
var renderTarget = document.getElementById("app")
|
|
|
|
ReactDOM.render(reactElement, renderTarget)
|
|
</script>
|