function download(filename, text) {  var element = document.createElement('a');  element.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent(text));  element.setAttribute('download', filename);   element.style.display = 'none';  document.body.appendChild(element);   element.click();   document.body.removeChild(element);}  download("hello.txt","This is the content of my file :)");复制代码