80 行 JS 代码实现页面添加水印：文字水印、多行文字水印、图片水印、文字&图片水印一、水印概括 1. 添加水印的好处信息标识：水印可以用于标识文档的所有者、保密级别、状态或其他相关信息，帮助用户更好地理解文档内容的属性。版权保护：在文档中添加水印可以帮助保护内容的版权，防止他人未经授权地复制、转载或篡改内容。安全保护...

问答 2024-04-03 来自：开发者社区

宜搭自己写js代码调用html或者jsx打印，宜搭写js代码导出某个容器内容为图片，钉钉端异常。

1、宜搭自定义页面写的js代码打印在浏览器端可以打印直接预览在钉钉端不能预览打印内容用的是调用的 iframe.contentWindow.print(); 2、写的js代码对某个页面生成图片并保存，在浏览器端可以保存图片，在钉钉端不可以。代码if (!isMobileEnv()) { const a = document.createElement('a'); a.do...

问答 2023-11-07 来自：开发者社区

视觉智能平台跨域的问题，我想请问一下我有什么办法直接用js代码处理图片？

视觉智能平台跨域的问题，我想请问一下我有什么办法直接用js代码处理图片，暂存本地。我现在没有oss的服务。我可以直接在浏览器完整的处理吗？不再去额外的开通oss。

问答 2023-09-18 来自：开发者社区

前端案例：飞机大战( js+dom 操作，代码完整，附图片素材)

一、案例效果二、实现思路创建游戏背景板；创建我方战机，鼠标进入游戏面板后其随鼠标轨迹运动； onmousemove创建子弹，让子弹周期性的在战机处发出并让其向 top 值减小的方向(向上)移动，top 小于 0 也就是子弹走出游戏面板时删除自身；创建敌机，让敌机周期性的在游戏背景板左侧的随机距离的位置产生，并让其向 top 增加的方向(向下)移动；定义函数，子弹和敌机相遇时消失。条件：所有的元素....

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更新时间 2024-06-20 13:30:59

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