Dive into secure and efficient coding practices with our curated list of the top 10 examples showcasing 'lazysizes' in functional components in JavaScript. Our advanced machine learning engine meticulously scans each line of code, cross-referencing millions of open source libraries to ensure your implementation is not just functional, but also robust and secure. Elevate your React applications to new heights by mastering the art of handling side effects, API calls, and asynchronous operations with confidence and precision.
// $FlowFixMe
const lazysizes = require('lazysizes');
// $FlowFixMe
const FontFaceObserver = require('fontfaceobserver');
const WB = new FontFaceObserver('Wellcome Bold Web', {weight: 'bold'});
const HNL = new FontFaceObserver('Helvetica Neue Light Web');
const HNM = new FontFaceObserver('Helvetica Neue Medium Web');
const LR = new FontFaceObserver('Lettera Regular Web');
Promise.all([WB.load(), HNL.load(), HNM.load(), LR.load()]).then(() => {
// $FlowFixMe
document.documentElement.classList.add('fonts-loaded');
}).catch(console.log);
lazysizes.init();
// $FlowFixMe
document.documentElement.classList.add('enhanced');
Raven.config('https://f756b8d4b492473782987a054aa9a347@sentry.io/133634', {
shouldSendCallback(data) {
const oldSafari = /^.*Version\/[0-8].*Safari.*$/;
const bingPreview = /^.*BingPreview.*$/;
return ![oldSafari, bingPreview].some(r => r.test(window.navigator.userAgent));
},
whitelistUrls: [/wellcomecollection\.org/],
ignoreErrors: [
/Blocked a frame with origin/,
/document\.getElementsByClassName\.ToString/ // https://github.com/SamsungInternet/support/issues/56
]
}
try {
ReactGA.set({ dimension5: JSON.stringify(toggles) });
} catch (error) {
// don't do anything
}
ReactGA.pageview(`${window.location.pathname}${window.location.search}`);
engagement = setTimeout(triggerEngagement, 10000);
Router.events.on('routeChangeStart', trackRouteChangeStart);
Router.events.on('routeChangeComplete', trackRouteChangeComplete);
// TODO: Is there a better implementation of this
const lazysizes = require('lazysizes');
lazysizes.init();
// Fonts
const FontFaceObserver = require('fontfaceobserver');
const WB = new FontFaceObserver('Wellcome Bold Web', { weight: 'bold' });
const HNL = new FontFaceObserver('Helvetica Neue Light Web');
const HNM = new FontFaceObserver('Helvetica Neue Medium Web');
const LR = new FontFaceObserver('Lettera Regular Web');
Promise.all([WB.load(), HNL.load(), HNM.load(), LR.load()])
.then(() => {
if (document.documentElement) {
document.documentElement.classList.add('fonts-loaded');
}
})
.catch(console.log);
const init = () => {
polyfills.init();
nodeList(document.querySelectorAll('.async-content')).forEach((el) => {
asynContent(el, dispatch);
});
lazysizes.init();
instagram.init();
tracking.init();
fontObserver.init();
const burgerEl = document.querySelector('.js-header-burger');
const openingHoursEls = document.querySelectorAll('.js-opening-hours');
const wobblyEdgeEls = document.querySelectorAll('.js-wobbly-edge');
const stickyEls = document.querySelectorAll('.js-sticky');
const articleGalleries = document.querySelectorAll('.article .js-image-gallery');
const basicPageGalleries = document.querySelectorAll('.basic-body .js-image-gallery');
const mainEl = document.getElementById('main');
const cohortButtons = document.querySelectorAll('.js-cohort-button');
const gifVideoEls = document.querySelectorAll('.js-gif-video');
const sortSearchEls = document.querySelectorAll('.js-sort-search');
const backToTopEl = document.querySelector('.js-back-to-top');
const toggleShowHideEls = document.querySelectorAll('.js-show-hide');
useEffect(() => {
window.addEventListener('optimizedResize', handleResize)
lazySizes.init()
ps(cid)
return () => {
window.removeEventListener('optimizedResize', handleResize)
}
})
ngAfterViewInit(): void {
lazySizes.init()
}
import 'lazysizes/plugins/respimg/ls.respimg';
import 'lazysizes/plugins/object-fit/ls.object-fit';
import 'lazysizes/plugins/parent-fit/ls.parent-fit';
/**
* configuration for lazysizes
*/
const stateClasses = {
lazyload: 'js-a-image--lazyload',
pending: 'state-a-image__image--pending',
loading: 'state-a-image__image--loading',
loaded: 'state-a-image__image--loaded',
};
Object.assign(lazySizes.cfg, {
preloadAfterLoad: false,
loadMode: 1,
expand: 10,
expFactor: 1.7,
lazyClass: stateClasses.lazyload,
preloadClass: stateClasses.pending,
loadingClass: stateClasses.loading,
loadedClass: stateClasses.loaded,
debug: true,
});
import __assign from 'core-js/features/object/assign';
Object.assign = Object.assign || __assign;
/**
* configuration for lazysizes
*/
enum States {
Lazyload = 'js-a-image--lazyload',
Pending = 'state-a-image__image--pending',
Loading = 'state-a-image__image--loading',
Loaded = 'state-a-image__image--loaded',
}
Object.assign(lazySizes.cfg, {
preloadAfterLoad: false,
loadMode: 1,
expand: 10,
expFactor: 1.7,
lazyClass: States.Lazyload,
preloadClass: States.Pending,
loadingClass: States.Loading,
loadedClass: States.Loaded,
debug: true,
});