flat 扁平化数组

<script>
    var data = [{
        id: 1,
        children: [{
            code: 'gba',
            id: 22
        }, {
            code: 'gbc',
            id: 11
        }]
    },
    {
        id: 2,
        children: [{
            code: 'ps',
            id: 9
        }, {
            code: 'xbox',
            id: 112
        }]
    }];

    var res = data.map((item) => {
        return item.children;
    });
    console.log(res);
    res = res.flat();
    console.log(res);
</script>

输出

摘要 ： https://blog.csdn.net/jyn15159/article/details/121241124