「React入門」条件付きレンダーのサンプル
使用例
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>React sample</title>
<script src="/react/16.4.0/umd/react.development.js"></script>
<script src="/react-dom/16.4.0/umd/react-dom.development.js"></script>
<script src="/babel-standalone/6.26.0/babel.min.js"></script>
</head>
<body>
<div id="cft"></div>
<script type="text/babel">
function UserGreeting(props) {
return <h1>Welcome back</h1>;
}
function GuestGreeting(props) {
return <h1>please login</h1>;
}
function Greeting(props) {
const isLoggedIn = props.isLoggedIn;
if (isLoggedIn) {
return <UserGreeting />;
}
return <GuestGreeting />;
}
ReactDOM.render(
// Try changing to isLoggedIn={true}:
<Greeting isLoggedIn={false} />,
document.getElementById('cft')
);
</script>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>React sample</title>
<script src="/react/16.4.0/umd/react.development.js"></script>
<script src="/react-dom/16.4.0/umd/react-dom.development.js"></script>
<script src="/babel-standalone/6.26.0/babel.min.js"></script>
</head>
<body>
<div id="cft"></div>
<script type="text/babel">
function UserGreeting(props) {
return <h1>Welcome back</h1>;
}
function GuestGreeting(props) {
return <h1>please login</h1>;
}
function Greeting(props) {
const isLoggedIn = props.isLoggedIn;
if (isLoggedIn) {
return <UserGreeting />;
}
return <GuestGreeting />;
}
ReactDOM.render(
// Try changing to isLoggedIn={true}:
<Greeting isLoggedIn={false} />,
document.getElementById('cft')
);
</script>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>React sample</title>
<script src="/react/16.4.0/umd/react.development.js"></script>
<script src="/react-dom/16.4.0/umd/react-dom.development.js"></script>
<script src="/babel-standalone/6.26.0/babel.min.js"></script>
</head>
<body>
<div id="cft"></div>
<script type="text/babel">
function UserGreeting(props) {
return <h1>Welcome back</h1>;
}
function GuestGreeting(props) {
return <h1>please login</h1>;
}
function Greeting(props) {
const isLoggedIn = props.isLoggedIn;
if (isLoggedIn) {
return <UserGreeting />;
}
return <GuestGreeting />;
}
ReactDOM.render(
// Try changing to isLoggedIn={true}:
<Greeting isLoggedIn={false} />,
document.getElementById('cft')
);
</script>
</body>
</html>