Javascript JSON日期反序列化 [英] Javascript JSON Date Deserialization

问题描述

我正在尝试反序列化具有javascript日期的json对象.在对象上调用JSON.stringify时，日期会序列化为未正确反序列化回日期的字符串.我尝试使用带有chrome，IE和FF的本机浏览器实现以及使用jquery来反序列化对象.两者都给出了一些结果.这是代码段:

I am trying to deserialize a json object that has a javascript date in it. When JSON.stringify is called on the object, dates are serialized to strings that are not properly deserialized back to dates. I have attempted to deserialize the object using both the native browser implementation with chrome, IE, and FF and using jquery. Both give the some results. Here is the snippet:

var obj = {Date: new Date()};
var objSer = JSON.stringify(obj);
var objDeser = JSON.parse(objSer);
var objJqDeser = $.parseJSON(objSer);

function getYear(value){
  try{
     return value.getYear();
  }
  catch(err){
    return err;
  }
}

$("#orig").text("Orig Year: " + getYear(obj.Date));
$("#deser").text("Deser Year: " + getYear(objDeser.Date));
$("#jqDeser").text("JqDeser Year: " + getYear(objJqDeser.Date));

我希望objDeser.Date是js日期而不是字符串.您可以在此处看到此问题的实际使用情况: http://jsbin.com/unijud/24/edit.构建javascript对象时，是否有可以正确反序列化日期的js库?

I want objDeser.Date to be a js date not a string. You can see this problem in action here: http://jsbin.com/unijud/24/edit. Is there any js libraries that can properly deserialize the dates when building the javascript object?

推荐答案

我接受了@LastCoder的建议，并编写了一个简单的实现.它似乎在做我想要的事情.

I took @LastCoder advice and wrote a simple implementation. It seems to be doing what I wanted it to.

var jsonDates = {
  dtrx2: /\d{4}-\d{2}-\d{2}/,
  parse: function(obj){
      var parsedObj = JSON.parse(obj);
      return this.parseDates(parsedObj);
  },
  parseDates: function(obj){
    // iterate properties
    for(pName in obj){

      // make sure the property is 'truthy'
      if (obj[pName]){
        var value = obj[pName];
        // determine if the property is an array
        if (Array.isArray(value)){
          for(var ii = 0; ii < value.length; ii++){
            this.parseDates(value[ii]);
          }
        }
        // determine if the property is an object
        else if (typeof(value) == "object"){
          this.parseDates(value);
        }
        // determine if the property is a string containing a date
        else if (typeof(value) == "string" && this.dtrx2.test(value)){
          // parse and replace
          obj[pName] = new Date(obj[pName]);
        }
      }
    }

    return obj;
  }
};

在 jsbin 上有一个在线示例.在要点上可以找到参考.

A live example is available on jsbin. A reference is available on gist.

这篇关于Javascript JSON日期反序列化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！