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React Short Circuit Evaluation

Feb 3, 2021C S nre
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Responsive Bootstrap Card.Img

Jan 25, 2023C S nre

0 likes • 13 views

const ResponsiveCardImg = styled(Card.Img)`
// For screens wider than 768px
@media(min-width: 768px) {
// Your responsive styles here.
}
// For screens smaller than 768px
@media(max-width: 768px) {
// Your responsive styles here.
}
`
export default function App() {
return (
<MainContainer>
<Container>
<Card text='white' bg='dark' style={styles.mainCard}>
<ResponsiveCardImg
style={styles.cardImage}
onClick={handleClick}
src={apeImage}
alt='Degenerate Ape Academy'
/>
<Card.Body>
<Card.Title className='text-center' as='h2'>
{apeId}
</Card.Title>
</Card.Body>
</Card>
</Container>
</MainContainer>
);
}

localStorage Cookie Consent

Oct 9, 2023Helper

0 likes • 226 views

import React, { useState, useEffect } from 'react';
import Link from 'next/link';
export default function CookieBanner() {
// Initialize with a default value (false if not previously set in localStorage)
const [cookieConsent, setCookieConsent] = useState(() =>
localStorage.getItem('cookieConsent') === 'true' ? true : false
);
useEffect(() => {
const newCookieConsent = cookieConsent ? 'granted' : 'denied';
window.gtag('consent', 'update', {
analytics_storage: newCookieConsent
});
localStorage.setItem('cookieConsent', String(cookieConsent));
}, [cookieConsent]);
return !cookieConsent && (
<div>
<div>
<p>
We use cookies to enhance the user experience.{' '}
<Link href='/privacy/'>View privacy policy</Link>
</p>
</div>
<div>
<button type="button" onClick={() => setCookieConsent(false)}>Decline</button>
<button type="button" onClick={() => setCookieConsent(true)}>Allow</button>
</div>
</div>
)
}

Generate a random HEX color

Nov 18, 2022AustinLeath

0 likes • 1 view

// Or
const randomColor = () => `#${(~~(Math.random()*(1<<24))).toString(16)}`;
console.log(randomColor);

copy to clipboard

Nov 19, 2022CodeCatch

0 likes • 0 views

const copyToClipboard = str => {
const el = document.createElement('textarea');
el.value = str;
el.setAttribute('readonly', '');
el.style.position = 'absolute';
el.style.left = '-9999px';
document.body.appendChild(el);
const selected =
document.getSelection().rangeCount > 0
? document.getSelection().getRangeAt(0)
: false;
el.select();
document.execCommand('copy');
document.body.removeChild(el);
if (selected) {
document.getSelection().removeAllRanges();
document.getSelection().addRange(selected);
}
};
copyToClipboard('Lorem ipsum'); // 'Lorem ipsum' copied to clipboard.

Subsets of an array

Nov 19, 2022CodeCatch

0 likes • 2 views

const getSubsets = arr => arr.reduce((prev, curr) => prev.concat(prev.map(k => k.concat(curr))), [[]]);
// Examples
getSubsets([1, 2]); // [[], [1], [2], [1, 2]]
getSubsets([1, 2, 3]); // [[], [1], [2], [1, 2], [3], [1, 3], [2, 3], [1, 2, 3]]

Truncate to fixed decimal

Nov 19, 2022CodeCatch

0 likes • 0 views

const toFixed = (n, fixed) => ~~(Math.pow(10, fixed) * n) / Math.pow(10, fixed);
// Examples
toFixed(25.198726354, 1); // 25.1
toFixed(25.198726354, 2); // 25.19
toFixed(25.198726354, 3); // 25.198
toFixed(25.198726354, 4); // 25.1987
toFixed(25.198726354, 5); // 25.19872
toFixed(25.198726354, 6); // 25.198726