Vue.js Lazy Loading

Developer
Size
3,620 Kb
Views
10,120

How do I make an vue.js lazy loading?

What is a vue.js lazy loading? How do you make a vue.js lazy loading? This script and codes were developed by Kyle Brumm on 07 January 2023, Saturday.

Vue.js Lazy Loading Previews

Vue.js Lazy Loading - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Vue.js Lazy Loading</title> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css"> <link rel="stylesheet" href="css/style.css">
</head>
<body> <main id="app"> <h1>News</h1> <section id="articles" class="section--articles"> <article class="article" v-for="(article, idx) in news" v-bind:key="article.title" v-bind:data-index="idx"> <div class="content"> <time class="date" :datetime="article.published">{{ article.published | formatDate }}</time> <div class="title">{{ article.title }}</div> </div> </article> <div id="loading" class="loading"><div class="loader"></div></div> </section>
</main> <script src='https://cdnjs.cloudflare.com/ajax/libs/vue/2.0.1/vue.min.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/vue-resource/1.0.3/vue-resource.min.js'></script> <script src="js/index.js"></script>
</body>
</html>

Vue.js Lazy Loading - Script Codes CSS Codes

.article { padding: 2rem 1rem; border-top: 1px solid gray;
}
.article .date { font-size: 1rem;
}
.article .title { font-size: 2rem;
}
.loading { border-top: 1px solid gray;
}
.loader,
.loader:before,
.loader:after { border-radius: 50%; width: 2.5em; height: 2.5em; -webkit-animation-fill-mode: both; animation-fill-mode: both; -webkit-animation: loader 1.8s infinite ease-in-out; animation: loader 1.8s infinite ease-in-out;
}
.loader { color: gray; font-size: 10px; margin: 2rem auto 5rem; position: relative; text-indent: -9999em; -webkit-transform: translateZ(0); transform: translateZ(0); -webkit-animation-delay: -0.16s; animation-delay: -0.16s;
}
.loader:before,
.loader:after { content: ''; position: absolute; top: 0;
}
.loader:before { left: -3.5em; -webkit-animation-delay: -0.32s; animation-delay: -0.32s;
}
.loader:after { left: 3.5em;
}
@-webkit-keyframes loader { 0%, 80%, 100% { box-shadow: 0 2.5em 0 -1.3em; } 40% { box-shadow: 0 2.5em 0 0; }
}
@keyframes loader { 0%, 80%, 100% { box-shadow: 0 2.5em 0 -1.3em; } 40% { box-shadow: 0 2.5em 0 0; }
}

Vue.js Lazy Loading - Script Codes JS Codes

var inViewport = function(el, side) { var win = window; var viewport = { top : win.scrollY, left : win.scrollX }; viewport.right = viewport.left + win.outerWidth; viewport.bottom = viewport.top + win.outerHeight; var element = { top: el.offsetTop, left: el.offsetLeft }; element.right = element.left + el.offsetWidth; element.bottom = element.top + el.offsetHeight; switch (side) { case 'top': return (viewport.top <= element.top); break; case 'right': return (viewport.right >= element.right); break; case 'bottom': return (viewport.bottom >= element.bottom); break; case 'left': return (viewport.left <= element.left); break; default: return (!(viewport.right <= element.left || viewport.left >= element.right || viewport.bottom <= element.top || viewport.top >= element.bottom)); }
};
var newsUrl = "http://www.stellarbiotechnologies.com/media/press-releases/json";
var app = new Vue({ el: '#app', data: { news: [], limit: 10, offset: 0, scrollable: true }, ready: function() { console.log('ready'); this.fetchNews(); }, methods: { fetchNews: function() { this.scrollable = false; document.getElementById('loading').style.display = 'block'; this.$http.get(newsUrl + '?limit=' + this.limit + '&offset=' + this.offset).then(function(response) { // Get and save results var news = response.body.news; if (news.length > 0) { this.news = this.news.concat(news); } else { this.scrollable = false; document.getElementById('loading').style.display = 'none'; } }, function(error) { // Print error console.log(error) }).then(function() { this.offset += this.limit; this.scrollable = true; }); }, loadMore: function() { this.fetchNews(); }, }, filters: { formatDate: function(date) { var months = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]; var newDate = new Date(date); return months[newDate.getMonth()] + ' ' + newDate.getDate() + ', ' + newDate.getFullYear(); } }
});
window.onload = function() { if (inViewport(document.getElementById('articles'), 'bottom') && app.scrollable) { app.fetchNews(); }
}
var timer;
window.onscroll = function() { if (inViewport(document.getElementById('articles'), 'bottom') && app.scrollable) { if(timer) { window.clearTimeout(timer); } timer = window.setTimeout(function() { app.fetchNews(); }, 500); }
}
Vue.js Lazy Loading - Script Codes
Vue.js Lazy Loading - Script Codes
Home Page Home
Developer Kyle Brumm
Username kjbrum
Uploaded January 07, 2023
Rating 3
Size 3,620 Kb
Views 10,120
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