检查对象是否可在JavaScript中序列化的可靠方法 [英] Reliable way to check if objects is serializable in JavaScript

问题描述

是否存在已知的方法或库，该库已经具有用于评估对象是否可在JavaScript中进行序列化的助手?

Is there a known way or a library that already has a helper for assessing whether an object is serializable in JavaScript?

我尝试了以下操作，但是它不涵盖原型属性，因此提供了误报:

I tried the following but it doesn't cover prototype properties so it provides false positives:

_.isEqual(obj, JSON.parse(JSON.stringify(obj))

还有另一个lodash函数，可以使我更接近真相，_.isPlainObject.但是，虽然_.isPlainObject(new MyClass())返回false，但是_.isPlainObject({x: new MyClass()})返回true，因此需要递归应用.

There's another lodash function that might get me closer to the truth, _.isPlainObject. However, while _.isPlainObject(new MyClass()) returns false, _.isPlainObject({x: new MyClass()}) returns true, so it needs to be applied recursively.

在我自己冒险之前，是否有人知道一种已经可靠的方法来检查JSON.parse(JSON.stringify(obj))是否实际上会导致与obj相同的对象?

Before I venture by myself on this, does anybody know an already reliable way for checking if JSON.parse(JSON.stringify(obj)) will actually result in the same object as obj?

推荐答案

最后，我创建了自己的利用Underscore/Lodash的_.isPlainObject的方法.我的功能最终类似于@bardzusny提出的功能，但是我也发布了我的函数，因为我更喜欢简单性/明晰性.随时概述优点/缺点.

In the end I created my own method that leverages Underscore/Lodash's _.isPlainObject. My function ended up similar to what @bardzusny proposed, but I'm posting mine as well since I prefer the simplicity/clarity. Feel free to outline pros/cons.

var _ = require('lodash');

exports.isSerializable = function(obj) {
  if (_.isUndefined(obj) ||
      _.isNull(obj) ||
      _.isBoolean(obj) ||
      _.isNumber(obj) ||
      _.isString(obj)) {
    return true;
  }

  if (!_.isPlainObject(obj) &&
      !_.isArray(obj)) {
    return false;
  }

  for (var key in obj) {
    if (!exports.isSerializable(obj[key])) {
      return false;
    }
  }

  return true;
};

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