javascript - 展平数组内的数组

Question

我有一个对象数组，其中每个对象都有一个“standings”属性(下面的示例数据)。我想展平 standings 数组并将其添加到父对象的末尾。

[{
name: "Entry 1",
value: 0,
standings: [{
    week: 1,
    team: 'MIN'
    }, {
    week: 2,
    team: 'NE'
    }, {
    week: 3,
    team: null
    }]
}, {
name: "my Other Entry",
value: 3,
standings: [{
    week: 1,
    team: 'BUF'
    }, {
    week: 2,
    team: 'CIN'
    }, {
    week: 3,
    team: 'TB'
    }]
}];

如何获得:

[{name: "Entry 1", value: 0, w1: 'MIN', w2: 'NE', w3: null},
{name: "my Other Entry", value: 3, w1: 'BUF', w2: 'CIN', w3: 'TB'}]

我在想扁平化的一些变体？

Answer 1

Array.prototype.reduce 会做:

var data = [
        {
            name: "Entry 1",
            value: 0,
            standings: [{
                week: 1,
                team: 'MIN'
            }, {
                week: 2,
                team: 'NE'
            }, {
                week: 3,
                team: null
            }]
        }, {
            name: "my Other Entry",
            value: 3,
            standings: [{
                week: 1,
                team: 'BUF'
            }, {
                week: 2,
                team: 'CIN'
            }, {
                week: 3,
                team: 'TB'
            }]
        }
    ],
    data1 = data.reduce(function (r, a) {
        r.push(a.standings.reduce(function (rr, b) {
            rr['w' + b.week] = b.team;
            return rr;
        }, {
            name: a.name,
            value: a.value
        }));
        return r;
    }, []);
document.write('<pre>'+JSON.stringify(data1, 0, 4)+'</pre>');