使用FileSaver.js

引入 FileSaver.js

下载JSON

var blob = new Blob([JSON.stringify(data)], { type: "" });
saveAs(blob, "hello.json");

下载TXT

var blob = new Blob([JSON.stringify(data)], {
    type: "text/plain;charset=utf-8"
});
saveAs(blob, "hello.txt");