Budget 2023

let isFetching = false; let isEndOfData = false; buildLoadMoreHandler( document.querySelector( ‘.wp-block-newspack-blocks-ie-stories’ ) ); function isPostsDataValid( data ) { if ( data && hasOwnProp( data, ‘items’ ) && hasOwnProp( data, ‘next’ ) && Array.isArray( data.items ) && data.items.length && hasOwnProp( data.items[ 0 ], ‘html’ ) && typeof data.items[ 0 ].html === ‘string’ ) { return true; } return false; } function buildLoadMoreHandler( blockWrapperEl ) { const btnEl = blockWrapperEl.querySelector( ‘[data-next]’ ); if ( ! btnEl ) { return; } const postsContainerEl = blockWrapperEl.querySelector( ‘[data-posts]’ ); btnEl.addEventListener( ‘click’, function( e ) { if ( isFetching || isEndOfData ) { return false; } isFetching = true; blockWrapperEl.classList.remove( ‘is-error’ ); blockWrapperEl.classList.add( ‘is-loading’ ); AMP.getState( ‘newspackHomepagePosts.exclude_ids’ ).then( function( exclude_ids ) { const requestURL = new URL( btnEl.getAttribute( ‘data-next’ ) ); requestURL.searchParams.set( ‘exclude_ids’, JSON.parse( exclude_ids ).join( ‘,’ ) ); apiFetchWithRetry( { url: requestURL.toString(), onSuccess, onError }, 3 ); } ); function onSuccess( data ) { AMP.getState( ‘newspackHomepagePosts.exclude_ids’ ).then( function( exclude_ids ) { AMP.setState( { newspackHomepagePosts: { exclude_ids: JSON.parse( exclude_ids ).concat( data.ids ) }, } ); } ); if ( isPostsDataValid( data ) ) { data.items.forEach( item => { const tempDIV = document.createElement( ‘div’ ); tempDIV.innerHTML = item.html.trim(); postsContainerEl.appendChild( tempDIV.childNodes[ 0 ] ); } ); if ( data.next ) { btnEl.setAttribute( ‘data-next’, data.next ); } if ( ! data.items.length || ! data.next ) { isEndOfData = true; blockWrapperEl.classList.remove( ‘has-more-button’ ); } isFetching = false; blockWrapperEl.classList.remove( ‘is-loading’ ); } } function onError() { isFetching = false; blockWrapperEl.classList.remove( ‘is-loading’ ); blockWrapperEl.classList.add( ‘is-error’ ); } } ); } function apiFetchWithRetry( options, n ) { const xhr = new XMLHttpRequest(); xhr.onreadystatechange = () => { if ( xhr.readyState !== 4 || n === 0 ) { return; } if ( xhr.status >= 200 && xhr.status < 300 ) { const data = JSON.parse( xhr.responseText ); options.onSuccess( data ); return; } options.onError(); apiFetchWithRetry( options, n – 1 ); }; xhr.open( 'GET', options.url ); xhr.send(); } function hasOwnProp( obj, prop ) { return Object.prototype.hasOwnProperty.call( obj, prop ); }