conditional style react
class App extends Component {
constructor() {
super()
this.state = { isRed: true }
}
render() {
const isRed = this.state.isRed
return <p style={{ color: isRed ? 'red' : 'blue' }}>Example Text</p>
}
}conditional style react
class App extends Component {
constructor() {
super()
this.state = { isRed: true }
}
render() {
const isRed = this.state.isRed
return <p style={{ color: isRed ? 'red' : 'blue' }}>Example Text</p>
}
}react native conditional rendering
class Component extends React.Component {
const a = true
render() {
return (
<Container>
{a == true
? (<Button/>)
: null
}
</Container>
)
}
}
This is staying: if a == true, render a button component.
Otherwise render null, in other words nothing.ternary react
render() {
const isLoggedIn = this.state.isLoggedIn;
return (
<div>
The user is <b>{isLoggedIn ? 'currently' : 'not'}</b> logged in.
</div>
);
}conditional props react
// single prop
propName={ condition ? something : somethingElse }
propName={ condition && something }
// multiple props
{ ...( condition ? { ...setOfProps } : { ...setOfOtherProps })}
{ ...( condition && { ...setOfProps })}react if statement
render() {
const isLoggedIn = this.state.isLoggedIn;
return (
<div>
The user is <b>{isLoggedIn ? 'currently' : 'not'}</b> logged in. </div>
);
}conditional render react
function UserGreeting(props) {
return <h1>Welcome back!</h1>;
}
function GuestGreeting(props) {
return <h1>Please sign up.</h1>;
}Copyright © 2021 Codeinu
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