CODEWITHSUNDEEP
javascriptjsonyuistringify
Naoya Makino
Naoya Makino

Reputation: 557

How to parse JSON String with Date attribute

I am trying to find a way to parse a JSON string which contains Date object.

> var obj = {}
> obj.date = new Date();
Mon Mar 19 2012 15:14:22 GMT-0700 (PDT)
> obj.number = 1
1
> obj.float = 1.1
1.1
> obj.str = "hello"
"hello"
> obj
Object
date: Mon Mar 19 2012 15:14:22 GMT-0700 (PDT)
float: 1.1
number: 1
str: "hello"

> YAHOO.lang.JSON.stringify(obj)
"{"date":"\"2012-03-19T22:14:22Z\"","number":1,"float":1.1,"str":"hello"}"

> parsed = YAHOO.lang.JSON.parse(str)
Object
date: ""2012-03-19T22:14:22Z""
float: 1.1
number: 1
str: "hello"

see that parsed.date is string where obj.date was previously Date object. What is the best way to parse JSON with nested objects?

thank you

Upvotes: 0

Views: 1330

Answers (2)

Mouna Cheikhna
Mouna Cheikhna

Reputation: 39678

Use yui stringToDate function stringToDate turns strings in the iso8601 UTC format into Dates :

var parsed = YAHOO.lang.Json.stringToDate(str);

parsed.date will now contain a Date object and other element will be de_serialized too.

see an example here.

Upvotes: 0

Rob W
Rob W

Reputation: 349222

JSON cannot be used to de-serialize objects (Date > String > Date).
Only strings, numbers, object (literals), arrays, booleans and null can be serialiszed well.

You have to write a custom parser, which deals with the Date object as follows:

  • Parse: Parse the timestamp using the Date constructor. eg new Date(timestamp);.

    function parse(str) {
    var obj = YAHOO.lang.JSON.parse(str);
    obj.date = new Date(obj);
}

Upvotes: 2

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