JS plug-in LazyImgv1.0 image lazy loading usage analysis

This article mainly introduces the usage of JS image delayed loading plug-in LazyImgv1.0, and analyzes the precautions and core operating skills of using the image delayed loading plug-in LazyImgv1.0 with examples. It also comes with demo source code for readers to download and refer to. Friends can refer to

. This article describes the usage of the JS image delay loading plug-in LazyImgv1.0. Share it with everyone for your reference, the details are as follows:

Note: LazyImg must define the lazy-data attribute, the attribute value is the image path of src

Introduce JS File:

<script type="text/javascript" src="js/lazyImg.v1.0.js"></script>

Default: If any condition is met in IMG, the image will be loaded;

1. There is no class attribute
2. If there is a class attribute and the attribute does not contain the css style name prefixed with "lazy-"

How to prohibit loading images by default

JS code:

LzDefault.action = false;

How to display images when clicking on event

JS code:

LazyImg.lazy("lazy-name");

<img  class="lazy-name lazy"  src="/static/imghwm/default1.png"  data-src="js/lazyImg.v1.0.min.js"   lazy-data="图片路径"/ alt="JS plug-in LazyImgv1.0 image lazy loading usage analysis" >

The name in "lazy-name" can be customized, "lazy-" is the prefix and must exist

DEMO:

nbsp;html>

 
  
  
  
  <script></script>
 
 
  

  

   

    注：LazyImg 必须定义lazy-data属性，属性值是src的图片路径
   
   

    引入JS文件：<script></script>
   
   

    下载地址：
    点击它！
    点击它(压缩版)！
   
  
  

   

    默认情况下: 在IMG中满足以任何一个条件，都会加载图片；
   
   

    1、没有class属性
   
   

    2、如果有class属性并且属性中不包含以"lazy-"为前缀的css样式名
   
  
  

   

   如何禁止默认加载图片
   
   

    JS代码: LzDefault.action = false;
   
  
  

   

   如何在点击事件时显示图片
   
   

    JS代码: LazyImg.lazy("lazy-name");
   
   

    
   
   

    "lazy-name" 中的name是可以自定义，"lazy-"是前缀必须存在
   
  
  

   

   

   

   

   

   

   

   

   

  
  

   

   默认加载了1、2、3、7、8、9图片，当点击下面的按钮时会加载 4、5、6图片
   
   

    
   
  
  

  <script>
  var showImg = function() {
   LazyImg.lazy("lazy-456");
  }
  // 以下定义默认不执行延迟加载
  // LzDefault.action = false;
 </script>
 

The above is the detailed content of JS plug-in LazyImgv1.0 image lazy loading usage analysis. For more information, please follow other related articles on the PHP Chinese website!