window.localStorage.removeItem("callbackHTML");

// res.data 为后端返回的html字符串
window.localStorage.setItem("callbackHTML", res.data);

// 读取本地保存的html数据，在本页打开
var newWin = window.open("", "_self");

newWin.document.write(localStorage.getItem("callbackHTML"));

// 关闭输出流
newWin.document.close();