json格式 Js里循环遍历json格式数据

什么是JOSN

http://www.cnblogs.com/gooddasenlin/archive/2009/05/31/1493116.html

 

var list = {'list':[{"id":8,"password":"月月","username":"维吾尔"}, {"id":7,"password":"dfgsfdf","username":"dfdfdf"}, {"id":6,"password":"aaabbb","username":"aaaabbb"}, {"id":5,"password":"gfdfgdf","username":"fggegte"}, {"id":3,"password":"dfgfgrewr","username":"hahaha"}, {"id":2,"password":"fggfhgfh","username":"fddgfgh"}, {"id":1,"password":"hdghdgd","username":"dfsgss"}]}; for(var l in list){ alert(l+" "+list[l]);for(var c in list[l]){alert(list[l][c].id+" "+list[l][c].password+" "+list[l][c].username);}} for(var l in list){ alert(l+" "+list[l]);for(var c in list[l]){for(var _c in list[l][c]){alert(_c+" "+list[l][c][_c]);};}} var li = [{"id":8,"password":"月月","username":"维吾尔"}, {"id":7,"password":"dfgsfdf","username":"dfdfdf"}, {"id":6,"password":"aaabbb","username":"aaaabbb"}, {"id":5,"password":"gfdfgdf","username":"fggegte"}, {"id":3,"password":"dfgfgrewr","username":"hahaha"}, {"id":2,"password":"fggfhgfh","username":"fddgfgh"}, {"id":1,"password":"hdghdgd","username":"dfsgss"}];for(var i in li){alert(i+" "+li[i]);for(var _i in li[i]){alert(_i+" "+li[i][_i]);}}

 

 

 

var obj = [ {"date":"2010-12-19", "price":123},
 {"date":"2010-12-12", "price":33},
 {"date":"2010-12-21", "price":444}
 ];

for(var i=0;i<obj.length;i++){
  if(obj[i].date == '2010-12-12'){
     return obj[i].price
  }
}