javascript - Json怎么做数据分析统计，看起来简单

Question

var json = [   
    {
        data: [
            { role: "管理员",state: 1 }, //1为enable
            { role: "维护组",state: 1 },
            { role: "管理员",state: 1 }
        ],

    }
];
变成=》
var json = [   
    {
        data: [
            { "管理员":2,"维护组":1,"enable":3,"disable":0}
        ]
    }
];

应该是这样的

  var json = [   
        {
            data: [
                { "group":"管理员","enable":2,"disable":0},
                { "group":"维护组","enable":1,"disable":0}
            ]
        }
    ];

Answer 1

如果没有其它要求的话，请参考如下。

http://jsfiddle.net/starandtina/LhSCq/1/

由于楼主的需求有变更，修改如下;

http://jsfiddle.net/starandtina/LhSCq/7/

Answer 2

var json = [   
    {
        data: [
            { role: "管理员",state: 1 }, //1为enable
            { role: "维护组",state: 1 },
            { role: "管理员",state: 1 }
        ],

    }
];
json = json.map(function(d) {
    var r = {};
    d.data.forEach(function(i) {
        var o = r[i.role] || {};
        o.e = o.e || 0;
        o.d = o.d || 0;
        i.state?o.e++:o.d++;
        r[i.role] = o;
    });
    return {data: Object.keys(r).map(function(v) {
        return {group:v,enable:r[v]['e'],disable:r[v]['d']};
    })};
})