将复杂的JavaScript对象转换为点表示法对象

时间:2012-11-04 13:02:15

标签: javascript syntax

我有像

这样的对象
{ "status": "success", "auth": { "code": "23123213", "name": "qwerty asdfgh" } }

我想将其转换为点符号(一级)版本,如:

{ "status": "success", "auth.code": "23123213", "auth.name": "qwerty asdfgh" }

目前我正在使用字段手动转换对象,但我认为应该有更好,更通用的方法来执行此操作。有没有?

注意:有一些示例显示相反的方式,但我找不到确切的方法。

注意2:我希望它与我的服务器端控制器动作绑定一起使用。

6 个答案:

答案 0 :(得分:28)

您可以递归地将属性添加到新对象,然后转换为JSON:

var res = {};
(function recurse(obj, current) {
  for(var key in obj) {
    var value = obj[key];
    var newKey = (current ? current + "." + key : key);  // joined key with dot
    if(value && typeof value === "object") {
      recurse(value, newKey);  // it's a nested object, so do it again
    } else {
      res[newKey] = value;  // it's not an object, so set the property
    }
  }
})(obj);
var result = JSON.stringify(res);  // convert result to JSON

答案 1 :(得分:5)

这是针对第一个前缀获得undefined时的修复/黑客攻击。 (我做了)

var dotize = dotize || {};

dotize.parse = function(jsonobj, prefix) {
  var newobj = {};
  function recurse(o, p) {
    for (var f in o)
    {
      var pre = (p === undefined ? '' : p + ".");
      if (o[f] && typeof o[f] === "object"){
        newobj = recurse(o[f], pre + f);
      } else {
        newobj[pre + f] = o[f];
      }
    }
    return newobj;
  }
  return recurse(jsonobj, prefix);
};

答案 2 :(得分:2)

我用前缀功能编写了另一个函数。我无法运行你的代码,但我得到了答案。 感谢

https://github.com/vardars/dotize

var dotize = dotize || {};

dotize.convert = function(jsonobj, prefix) {
    var newobj = {};

    function recurse(o, p, isArrayItem) {
        for (var f in o) {
            if (o[f] && typeof o[f] === "object") {
                if (Array.isArray(o[f]))
                    newobj = recurse(o[f], (p ? p + "." : "") + f, true); // array
                else {
                    if (isArrayItem)
                        newobj = recurse(o[f], (p ? p : "") + "[" + f + "]"); // array item object
                    else
                        newobj = recurse(o[f], (p ? p + "." : "") + f); // object
                }
            } else {
                if (isArrayItem)
                    newobj[p + "[" + f + "]"] = o[f]; // array item primitive
                else
                    newobj[p + "." + f] = o[f]; // primitive
            }
        }
        return newobj;
    }

    return recurse(jsonobj, prefix);
};

答案 3 :(得分:1)

const sourceObj = { "status": "success", "auth": { "code": "23123213", "name": "qwerty asdfgh" } }
;

const { auth, ...newObj } = sourceObj;

const resultObj = {
  ...newObj,
  ..._.mapKeys(auth, (val, key) => `auth.${key}`)
}


// function approach
const dotizeField = (obj, key) => {
  const { ...newObj } = sourceObj;

  delete newObj[key];

  return {
    ...newObj,
    ..._.mapKeys(obj[key], (val, subKey) => `${key}.${subKey}`)
  }
}

const resultObj2 = dotizeField(sourceObj, 'auth');

console.log(sourceObj, resultObj, resultObj2);
<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.20/lodash.min.js"></script>

答案 4 :(得分:1)

按照@pimvdb 所做的(他提交的一个紧凑有效的解决方案),我添加了一点修改,让我拥有一个可以轻松导出的功能:

    function changeObjectToDotNotationFormat(inputObject, current, prefinalObject) {
      const result = prefinalObject ? prefinalObject : {}; // This allows us to use the most recent result object in the recursive call
      for (let key in inputObject) {
        let value = inputObject[key];
        let newKey = current ? `${current}.${key}` : key;
        if (value && typeof value === "object") {
          changeObjectToDotNotationFormat(value, newKey, result);
        } else {
          result[newKey] = value;
        }
      }
      return result;
    }

答案 5 :(得分:0)

您可以使用NPM dot-objectGithub)转换为对象到点的符号,反之亦然。