将json字符串保存到客户端pc(使用HTML5 API) [英] Save json string to client pc (using HTML5 API)
问题描述
我读了几篇关于相同的旧线程,但最近看到API文件改变了很多。我的要求是保存一个json文件(数据在indexdDB本地,但我需要一种方法来备份它)。由于我使用的是indexdDB,因此我只针对最近的浏览器,主要是Chrome浏览器。那么,是否可以将数据(json字符串)保存到客户端计算机?
I read few older thread about the same, but seen the file API changed a lot recently. My requirement is to save a json file (data is locally in indexdDB, but I need a way to back it up). Since I use indexdDB, I only target recent browsers, mainly chrome. So, it it possible to save data (json string) to client computer?
我见过 http://eligrey.com/demos/FileSaver .js / ,但有没有办法原生呢?
I have seen http://eligrey.com/demos/FileSaver.js/ , but is there a way to do it natively?
谢谢。
推荐答案
您可以使用 Blob
和HTML5 [下载]
功能,提供JSON备份下载:
You can use a Blob
and the HTML5 a[download]
feature to provide a JSON backup download:
var data = {a:1, b:2, c:3};
var json = JSON.stringify(data);
var blob = new Blob([json], {type: "application/json"});
var url = URL.createObjectURL(blob);
var a = document.createElement('a');
a.download = "backup.json";
a.href = url;
a.textContent = "Download backup.json";
以下是一个jsfiddle示例: http://jsfiddle.net/potatosalad/yuM2N/
Here is a jsfiddle example: http://jsfiddle.net/potatosalad/yuM2N/
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