在学习es6的时候用promise封装了一个ajax <script type="text/javascript"> function getNews(URL) { let promise = new Promise((resolve,reject)=>{ //状态初始化 //执行异步任务 let xmlHttp = new XMLHttpRequest();//创建对象 console.log(xmlHttp.readyState);//初始状态 为0 一步一步变为
1.前言 静态页面 加载 <script type="module" > 报CORS 跨域错误,提示Access to script at ftp:///xxx.js from origin 'null' has been blocked by CORS policy: Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, ch
出现Canvas.toDataURL 图片跨域问题怎么解决呢?下面小编就为大家带来一篇Canvas.toDataURL 图片跨域问题的快速解决方法.一起跟随小编过来看看吧 如题,在将页面的图片地址进行本地输出时(Html2Canvas.js),因不同源存在跨域问题,会出现toDataURL访问权限问题: [Redirect at origin 'http://sub1.xx.com' has been blocked from loading by Cross-Origin Resource S