图片延迟加载库Layzr

<!DOCTYPE html> 
<html> 
<head> 
<title>Layzr Demo</title> 
<script src="node_modules/layzr.js/dist/layzr.js"></script>
<style>
.row {
margin: 50px 0;
height: 500px;
}
.border {
padding: 10px;
border-style: solid;
border- 3px;
border-color: blue;
}
</style>
</head> 
<body> 
<div class="wrapper"> 
<div class="row"> 
<img src="./bg.png" data-layzr="http://blog.fens.me/wp-content/uploads/2015/02/marked.png"> 
</div> 
<div class="row"> 
<img src="./bg.png" data-layzr="http://blog.fens.me/wp-content/uploads/2015/03/buffer.png"> 
</div> 
<div class="row"> 
<img src="./bg.png" data-layzr="http://blog.fens.me/wp-content/uploads/2015/02/express4.png"> 
</div> 
<div class="row"> 
<img src="./bg.png" data-layzr="http://blog.fens.me/wp-content/uploads/2015/03/child_process.png"> 
</div> 
<div class="row"> 
<img src="./bg.png" data-layzr="http://blog.fens.me/wp-content/uploads/2015/03/crypto.png"> 
</div> 
<div class="row"> 
<img src="./bg.png" data-layzr="http://blog.fens.me/wp-content/uploads/2014/02/architect.png"> 
</div> 
<div class="row"> 
<img src="./bg2.png" data-layzr="http://blog.fens.me/wp-content/uploads/2013/08/seo-title.png"> 
</div> 
</div> 
<script>
var layzr = new Layzr({
selector: '[data-layzr]',
attr: 'data-layzr',
retinaAttr: 'data-layzr-retina',
threshold: 10,
callback: function () {
console.log(this);
this.classList.add('border');
}
});
</script>
</body> 
</html> 

  

原文地址:https://www.cnblogs.com/adtuu/p/4688201.html