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https://github.com/jaywcjlove/store.js
A simple, lightweight JavaScript API for handling browser localStorage , it is easy to pick up and use, has a reasonable footprint 2.36kb(gzipped: 1.04kb), and has no dependencies.
https://github.com/jaywcjlove/store.js
javascipt javascript json localstorage localstorage-api storage
Last synced: about 2 months ago
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A simple, lightweight JavaScript API for handling browser localStorage , it is easy to pick up and use, has a reasonable footprint 2.36kb(gzipped: 1.04kb), and has no dependencies.
- Host: GitHub
- URL: https://github.com/jaywcjlove/store.js
- Owner: jaywcjlove
- License: other
- Created: 2014-11-18T09:29:48.000Z (almost 10 years ago)
- Default Branch: master
- Last Pushed: 2023-11-27T04:30:09.000Z (10 months ago)
- Last Synced: 2024-04-14T03:54:59.563Z (5 months ago)
- Topics: javascipt, javascript, json, localstorage, localstorage-api, storage
- Language: JavaScript
- Homepage: https://jaywcjlove.github.io/store.js
- Size: 827 KB
- Stars: 413
- Watchers: 18
- Forks: 127
- Open Issues: 8
-
Metadata Files:
- Readme: README-zh.md
- Funding: .github/FUNDING.yml
- License: MIT-LICENSE
Awesome Lists containing this project
- awesome-github-star - store.js
README
JavaScript localStorage
===
[](https://jaywcjlove.github.io/#/sponsor)
[](https://www.npmjs.com/package/storejs)
[](https://github.com/jaywcjlove/store.js/actions/workflows/ci.yml)
[](https://jaywcjlove.github.io/store.js/lcov-report/)
[](./README.md)
本地存储localStorage的封装，提供简单的API，没有依赖，压缩只有 2.08kb(gzipped: 0.97kb)。
> 老的 [v1](https://raw.githack.com/jaywcjlove/store.js/doc-v1.1/index.html) 版本。 [文档预览](https://raw.githack.com/jaywcjlove/store.js/doc-v1.1/index.html)。
## 安装
```bash
# npm 安装
npm install storejs
```
生成压缩文件和开发模式
```bash
$ npm run build # 生成带UMD的js原文件 以及 min.js
$ npm run watch # 监听文件改变自动压缩生成js
```
## 测试
```bash
$ npm test
$ npm run ssr
# 浏览器打开 http://localhost:1987/test/test.html
```
# 使用
或者在您的HTML中手动下载并引入 **store.min.js**，你也可以通过 [UNPKG](https://unpkg.com/storejs/dist/) 进行下载：
```html
store("test","tank");
```
or
```js
var store = require('storejs');
store("test","tank");
```
⚠️ 原生方法调用获取数据，因为为了存储 JSON 对象，所以会先通过 JSON.stringify() 方法，将对象转换为一个 JSON 字符串
```js
JSON.parse(localStorage.getItem('test'))
```
## 本地存储APIs
```js
store(key, data); //单个存储字符串数据
store({key: data, key2: data2}); //批量存储多个字符串数据
store(key); //获取key的字符串数据
store("?key"); //判断key是否存在
store(); //获取所有key/data
//store(false);🔫 //（弃用）因为传入空值 或者报错很容易清空库
//store(key,false); 🔫 //（弃用）删除key包括key的字符串数据, 当val 为 0的时候无法存储...
store.set(key, data[, overwrite]); // === store(key, data);
store.set({key: data, key2: data2}) // === store({key: data, key2: data});
store.get(key[, alt]); // === store(key);
store.get("?key"); // 判断key是否存在
store.get("key1", "key2", "key3"); // 获取 `key1`,`key2`,`key3` 数据
store.remove(key); //===store(key,false)
store.clear(); //清空所有key/data
store.keys(); //返回所有key的数组
store.forEach(callback); //循环遍历，返回false结束遍历
store.search(string); //搜索方法
store.has(key); //⇒判断是否存在返回true/false
//⇒ 提供callback方法处理数据
store("test",function(key,val){
console.log(val)//这里处理 通过test获取的数据
return [3,4,5]//返回数据并存储
})
store(["key","key2"],function(key){
//获取多个key的数据处理，return 并保存；
console.log("key:",key)
return "逐个更改数据"
})
// 即创建/更新/删除数据项时，触发该事件
store.onStorage(function(key,val){
console.log('onStorage:',key,val)
})
```
### set
单个存储或删除字符串数据
`store.set(key, data[, overwrite]); `
效果相同`store(key, data);`
```js
store.set("wcj","1"); //⇒ 1
store.set("wcj"); //⇒ 删除wcj及字符串数据
```
### ~~setAll~~ 🔫
> 使用 `store.set({key: data, key2: data2})` 代替
批量存储多个字符串数据
`store.setAll(data[, overwrite]) `
效果相同`store({key: data, key2: data});`
```js
store.setAll({
"wcj1":123,
"wcj2":345
}); // 存储两条字符串数据
store.setAll(["w1","w2","w3"]);
// 存储三条字符串数据
// 0⇒ "w1"
// 1⇒ "w2"
// 2⇒ "w3"
```
### get
获取key的字符串数据
`store.get(key[, alt])`
效果相同`store(key)`
```js
store.get("wcj1"); // 获取wcj1的字符串数据
store("wcj1"); // 功能同上
```
### ~~getAll~~ 🔫
> `store()` 和 `store.get()` 代替
获取所有 key/data `store.getAll()`
与效果相同`store()`
```js
store.getAll(); //⇒JSON
store(); //功能同上
```
### clear
清空所有 `key/data` `store.clear()`
⚠️ 弃用 ~~store(false)~~ 因为传入空值 或者报错很容易清空库
```js
store.clear(); //
```
### keys
返回所有 `key` 的数组 `store.keys()`
```js
store.keys(); //⇒["w1", "w2", "w3"]
```
### search
搜索方法 `store.search(string)`
```js
store.search('key') //⇒ {"key":"keytest","key1":{"a":1},"key2":"逐个更改数据"}
```
### has
判断是否存在返回 `true/false` `store.has(key)`
```js
store.has("w1"); //⇒true
```
### remove
删除key包括key的字符串数据 `store.remove(key)`
```js
store.remove("w1"); //删除w1 返回 w1的value
store("w1", false); //这样也是 删除w1
```
### forEach
循环遍历，返回 `false` 结束遍历
```js
store.forEach(function(k,d){
console.log(k, d);
if (k== 3) return false;
})
```
### 定时清除
(做个笔记，未来将定时清除封装起来，有思路)
```js
if (+new Date() > +new Date(2014, 11, 30)) {
localStorage.removeItem("c"); //清除c的值
// or localStorage.clear();
}
```
## storage事件
不知为毛不支持参看下面 [onStorage](#onstorage) =>HTML5的本地存储，还提供了一个storage事件，可以对键值对的改变进行监听，使用方法如下：
```js
if(window.addEventListener){
window.addEventListener("storage",handle_storage,false);
}else if(window.attachEvent){
window.attachEvent("onstorage",handle_storage);
}
function handle_storage(e){
if(!e){e=window.event;}
//showStorage();
}
```
对于事件变量e，是一个StorageEvent对象，提供了一些实用的属性，可以很好的观察键值对的变化，如下表：
| Property | Type | Description |
| ----- | ---- | ---- |
|key|String|The named key that was added, removed, or moddified|
|oldValue|Any|The previous value(now overwritten), or null if a new item was added|
|newValue|Any|The new value, or null if an item was added|
|url/uri|String|The page that called the method that triggered this change|
## 链式书写
```js
store.set('ad',234).get('ad')
store.onStorage(function(type){
console.log('type:',type)
}).set('wcj',12).clear().get('wcj')
//⇒ type: set
//⇒ type: clear
//⇒ type: set
```
## TODO
- [ ] `store.get([key,key2])` 获取方法，返回json
- [ ] `store([key,key2])` 获取方法，返回json
- [ ] `onStorage` 方法测试用例，以及实现
## 兼容
来源：[sessionStorage](https://developer.mozilla.org/en-US/docs/Web/API/Window/sessionStorage) [localStorage](https://developer.mozilla.org/en-US/docs/Web/API/Window/localStorage)
| 特性 | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit)| iPhone(IOS) | Android | Opera Mobile | Window Phone |
| ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- |
|localStorage|4+|3.5+| 8+ |10.50+|4+| 3.2+ | 2.1+ | 11+ | 8+ |
|sessionStorage|5+|2+| 8+ |10.50+|4+| 3.2+ | 2.1+ | 11+ | 8+ |
## 本地存储大小
`JSON.stringify(localStorage).length` 当前占用多大容量
[检测localstore容量上限](https://arty.name/localstorage.html)
## Related
- [cookiejs](https://github.com/jaywcjlove/cookie.js) 🍪 一个简单，轻量级的JavaScript API，用于处理浏览器cookie ，它易于上传和使用，具有合理的占用空间（~2kb）（gzip压缩：0.84kb），并且没有依赖性。 它不应该干扰任何JavaScript库或框架。
### License
Licensed under the MIT License.