vue实现可防止删除的水印组件示例代码-html代码-BFW代码库

vue实现可防止删除的水印组件示例代码

代码语言：html

所属分类：其他

代码描述：vue实现可防止删除的水印组件示例代码，采用MutationObserver监听dom修改操作防止水印被删除。

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Watermark Component</title>
    <script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/vue@2.6.1-dev.js"></script>
</head>

<body>
    <div id="app">
        <watermark>
            <div>
                <!-- 这里是您的页面内容 -->
                <h1>Hello, World!</h1>
            </div>
        </watermark>
    </div>

    <script>
        var observer=null;
            // 定义水印组件
            Vue.component('watermark', {
              mounted() {
                  
                   var that=this;
               observer = new MutationObserver((entity) => {
                    console.log(entity)
                  that.drawWatermark();
                });
        
                this.drawWatermark();
                window.addEventListener('scroll', this.drawWatermark);
                window.addEventListener('resize', this.drawWatermark);
               
              
             
               
        
              },
              beforeDestroy() {
                window.removeEventListener('scroll', this.drawWatermark);
                window.removeEventListener('resize', this.drawWatermark);
              },
              methods: {
        
                drawWatermark() {
                    
                    
                    
                  
                   const ins = document.querySelector('.watermark');
          
                //如果标签在
                if (ins) {
                    return;
                }
                
                  if(observer!=null){
                        console.log("停止监听")
                          observer.disconnect();
                          
                          
                    }
                  const canvas = document.createElement('canvas');
                  
                   canvas.classList.a.........完整代码请登录后点击上方下载按钮下载查看