导出localStorage中的数据以供以后重新导入 [英] export Data in localStorage for later re-import

问题描述

我想从我的localStorage导出一些项目，以便在外部保存，但格式可以稍后重新导入。

I want to export a few items from my localStorage to save it externally but in a format so that I can import it again later.

我试图写可以在稍后在textarea中粘贴的可执行代码。那么该文本的值将只是eval（）ed。

My attempt was to write executable code that can be pasted later in a textarea. Then the value of that textare will simply be eval()ed.

问题：存储在localStorage中的数据存储为

Problem: The data stored in localStorage were stored as

var data = [];
data.push('sampledata');
data.push({sample: 'object'});
localStorage.setItem('varname',data);

所以它包含我不喜欢的各种字符，如，等等

So it contains various chars I don't like, like ', " etc

目前为止，我的（不工作）解决方案是：

My (not working) solution so far was:

var container = $('#localDataContainer');
container.append('localStorage.setItem("cockpitLastVisited","' + localStorage.getItem("cockpitLastVisited") + '");<br/>');
container.append('localStorage.setItem("cockpit_services","' + localStorage.getItem("cockpit_services") + '");<br/>');
container.append('localStorage.setItem("cockpit_users","' + localStorage.getItem("cockpit_users") + '");');

如果我的尝试似乎是好的，那么最好的方法是创建代码，然后可以按照它的方式执行？

If my attempt seems to be OK, what is the best way to create code that can then be executed the way it is?

推荐答案

您可以使用JSON.parse（字符串对象）和JSON.stringify（对象到字符串）将localStorage项编码为字符串

You can encode localStorage items into strings using JSON.parse (string to object) and JSON.stringify (object to string)

阅读fr om localStorage

Read from localStorage

var strValue = JSON.stringify(localStorage.getItem("varname"));

写入localStorage

Write to localStorage

localStorage.setItem("varname",JSON.parse(strValue));

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