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深层 JSON 数据扁平化

案例一

有一个嵌套的纯 JSON 数据,结构不定,包含数组和对象。

{
"a": 1,
"b": {
"b1": 2,
"b2": [3, 4, { "b3": "hello" }]
},
"c": [{"c1": 5, "c2": 6} ,7]
}

处理后的数据结构:

{
"a": 1,
"b.b1": 2,
"b.b2[0]": 3,
"b.b2[1]": 4,
"b.b2[2].b3": "hello",
"c[0].c1": 5,
"c[0].c2": 6,
"c[1]": 7
}
点击查看解法:
function flat(data) {
const flatObj = {};
const check = (v) => Object.prototype.toString.call(v);

const handle = (data, path = '') => {
if (check(data) === "[object Object]") {
for (let key in data) {
handle(data[key], path ? `${path}.${key}` : key);
}
return;
}
if (check(data) === "[object Array]") {
for (let i = 0; i < data.length; i++) {
handle(data[i], path ? `${path}[${i}]` : i);
}
return;
}
flatObj[path] = data;
};

handle(data);
return flatObj;
}