StarCitizenTools/mediawiki-skins-Citizen
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refactor: convert skin.citizen.scripts.lazyload to ES6

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alistair3149 2021-04-20 20:27:38 -04:00
parent 98ee513e39
commit 43072b1947
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1 changed files with 9 additions and 9 deletions
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18
resources/skins.citizen.scripts.lazyload/skins.citizen.scripts.lazyload.js
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@ -1,13 +1,13 @@
/*
* Citizen - Lazyload JS
* https://starcitizen.tools
*
* Lazyloading images with Native API or IntersectionObserver
* TODO: Remove the features since it is depreciated by $wgNativeImageLazyLoading in 1.35
*/
var observer;
function main() {
/**
* @param {document} document
* @return {void}
*/
function main( document ) {
// Native API
if ( 'loading' in HTMLImageElement.prototype ) {
document.querySelectorAll( 'img.lazy' ).forEach( function ( img ) {
@ -24,12 +24,12 @@ function main() {
} else {
// IntersectionObserver API
if ( typeof IntersectionObserver !== 'undefined' && 'forEach' in NodeList.prototype ) {
observer = new IntersectionObserver( function ( changes ) {
const observer = new IntersectionObserver( ( changes ) => {
if ( 'connection' in navigator && navigator.connection.saveData === true ) {
return;
}
changes.forEach( function ( change ) {
changes.forEach( ( change ) => {
if ( change.isIntersecting ) {
change.target.setAttribute( 'src', change.target.getAttribute( 'data-src' ) );
change.target.removeAttribute( 'data-src' );
@ -51,4 +51,4 @@ function main() {
}
}
main();
main( document );