如何用js导出文本

var funDownload = function (content, filename) { // 创建隐藏的可***链接
var eleLink = document.createElement('a');
eleLink.download = filename;
eleLink.style.display = 'none'; // 字符内容转变成blob地址
var blob = new Blob([content]);
eleLink.href = URL.createObjectURL(blob); // 触发点击
document.body.appendChild(eleLink);
eleLink.click(); // 然后移除
document.body.removeChild(eleLink);
};