小编Jea*_*ard的帖子

你好,我是社区的新手,这是我的第一个问题.

///我有一个对象数组.在某些时候会是几百.

var locations = [{
    "name": "Costco",
    "city": "San Francisco",
    "state": "CA",
    "zip": "75201",
}, {
    "name": "Safeway",
    "city": "Appleton",
    "state": "WI",
    "zip": "90210",
}, {
    "name": "Foodmart",
    "city": "Orlando",
    "state": "FL",
    "zip": "90210",
}, {
    "name": "Trader Joes",
    "city": "Concord",
    "state": "CA",
    "zip": "90210",
}];

///我需要计算每个"state:"并将值保存为变量,如下所示.

var CA
/// Value would be 2

var FL
/// Value would be 1

var WI
/// Value would be 1 

///原谅我,我对阵列有点生疏了