TaffyDB：开源JavaScript数据库

你是否曾经注意到javascript的对象有点像数据库中的记录，你把很多javascript对象包装到一起时就像是你在处理一个数据库中的表，TaffyDB是一个Javascript库，它提供了强大的数据库功能，大大改善了你在Javascript中使用数据的方式。TaffyDB 是一个免费开源的 JavaScript 库，用于在 Web 上实现一个轻量级的数据访问层，也就是一个简单的数据库。

主要特点：

• 很小，只有10K左右
• 简单，JavaScript的语法
• 快速
• 易于集成到任何Web应用
• 兼容主流的Ajax库，例如：YUI, JQuery, Dojo, Prototype, EXT, etc
• CRUD 接口 (Create, Read, Update, Delete)
• 排序
• 循环
• 高级查询

使用例子

创建一个数据库

 

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// Create DB and fill it with records var friends = TAFFY([     {"id":1,"gender":"M","first":"John","last":"Smith","city":"Seattle, WA","status":"Active"},     {"id":2,"gender":"F","first":"Kelly","last":"Ruth","city":"Dallas, TX","status":"Active"},     {"id":3,"gender":"M","first":"Jeff","last":"Stevenson","city":"Washington, D.C.","status":"Active"},     {"id":4,"gender":"F","first":"Jennifer","last":"Gill","city":"Seattle, WA","status":"Active"}    ]);

使用字段名或者字段的关系过滤

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// Find all the friends in Seattle friends({city:"Seattle, WA"});   // Find John Smith, by ID friends({id:1});   // Find John Smith, by Name friends({first:"John",last:"Smith"});

很容易访问数据

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// Kelly's record var kelly = friends({id:2}).first();   // Kelly's last name var kellyslastname = kelly.last;   // Get an array of record ids var cities = friends().select("id");   // Get an array of distinct cities var cities = friends().distinct("city");   // Apply a function to all the male friends friends({gender:"M"}).each(function (r) {    alert(r.name + "!"); });

快速地修改数据

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// Move John Smith to Las Vegas friends({first:"John",last:"Smith"}).update({city:"Las Vegas, NV:"});   // Remove Jennifer Gill as a friend friends({id:4}).remove();   // insert a new friend friends.insert({"id":5,"gender":"F","first":"Jennifer","last":"Gill","city":"Seattle, WA","status":"Active"});

github网址：https://github.com/typicaljoe/taffydb

官网：http://taffydb.com。