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 Seattlefriends({city:"Seattle, WA"});// Find John Smith, by IDfriends({id:1});// Find John Smith, by Namefriends({first:"John",last:"Smith"});//得到数据,方法名应该很容易就看懂了吧// Kelly's recordvar kelly = friends({id:2}).first();// Kelly's last namevar kellyslastname = kelly.last;// Get an array of record idsvar cities = friends().select("id");// Get an array of distinct citiesvar cities = friends().distinct("city");// Apply a function to all the male friendsfriends({gender:"M"}).each(function (r) { alert(r.name + "!");});//更新数据// Move John Smith to Las Vegasfriends({first:"John",last:"Smith"}).update({city:"Las Vegas, NV:"});//删除数据// Remove Jennifer Gill as a friendfriends({id:4}).remove();//插入数据// insert a new friendfriends.insert({"id":5,"gender":"F","first":"Jennifer","last":"Gill","city":"Seattle, WA","status":"Active"}); |
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