特点:
小文件大小,查询速度极快
强大的以JavaScript为中心的数据选择引擎
数据库启发的功能,如计数,更新和插入
强大的跨浏览器支持
轻松扩展自己的功能
兼容任何DOM库(jQuery,YUI,Dojo等)
与服务器端JS兼容
TaffyDB 增删改查
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 | //创建并填充数据 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" } ]); //查找,注意得到的是一个TaffyDB对象 // 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" }); //得到数据,方法名应该很容易就看懂了吧 // 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 + "!" ); }); //更新数据 // Move John Smith to Las Vegas friends({first: "John" ,last: "Smith" }).update({city: "Las Vegas, NV:" }); //删除数据 // Remove Jennifer Gill as a friend friends({id:4}).remove(); //插入数据 // insert a new friend friends.insert({ "id" :5, "gender" : "F" , "first" : "Jennifer" , "last" : "Gill" , "city" : "Seattle, WA" , "status" : "Active" }); |
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