如何在Javascript中将点符号字符串转换为对象 [英] How to turn dot notation string into an object in Javascript

问题描述

我正在尝试将点符号字符串转换为对象，例如给定

I'm trying to turn a dot notation string into an object, for example given

  [{
      key: 'app.team.instance',
      value: 'some value1'
  }, {
      key: 'app.team.instance.obj',
      value: 'some value'
  }, {
      key: 'app.team.app.some',
      value: 'some value'
  }, {
      key: 'app.service.awesome.more',
      value: 'more values'
  }]

我想把它变成一个想要获取的对象

I would like to turn it an object like to get

 {
  "team": {
      "instance": "some value1",
      "server": {
          "obj": "some value"
      },
      "app": {
          "some": "some value"
      }
  },
  "service": {
      "awesome": {
          "more": "more values"
      }
  }
}

这就是我尝试使用以下功能进行的尝试.看我的功能，我错过了什么或应该改善什么?

This's what I have tried using the following function. Looking at my function what have I missed or should improve?

function createObjFromRows(skip, key, value, obj) {
    const ARRAY_KEYS = key.split('.');
    const ARRAY_LENGTH = ARRAY_KEYS.length;

    let i = skip ? 1 : 0;

    for (; i < ARRAY_LENGTH; i++) {
        if (i < (ARRAY_LENGTH - 1)) {
            if (!obj.hasOwnProperty(ARRAY_KEYS[i])) { obj[ARRAY_KEYS[i]] = {}; }
        } else {
            obj[ARRAY_KEYS[i - 1]][ARRAY_KEYS[i]] = value;
        }
    }
}

这就是我目前得到的.

{
    team: {
        instance: 'some value1'
    },
    server: {
        obj: 'some value'
    },
    app: {
        some: 'some value'
    },
    service: {},
    awesome: {
        more: 'more values'
    }
}

推荐答案

在将键迭代到嵌套属性之后，您可以拆分给定的键字符串并保存最后一个键以分配值.

You could split the given key strings and save the last key for the assignment of the value after iterating the keys to the nested property.

var data = [{ key: 'app.team.instance', value: 'some value1' }, { key: 'app.team.server.obj', value: 'some value' }, { key: 'app.team.app.some', value: 'some value' }, { key: 'app.service.awesome.more', value: 'more values' }],
    result = data.reduce(function (r, o) {
        var path = o.key.split('.'),
            last = path.pop();

        path.reduce(function (p, k) {
            return p[k] = p[k] || {};
        }, r)[last] = o.value;
        return r;
    }, {});

console.log(result);

.as-console-wrapper { max-height: 100% !important; top: 0; }

这篇关于如何在Javascript中将点符号字符串转换为对象的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！