Convert JSON Date to JavaScript/jQuery date

The JSON specification does not specify a format for exchanging dates which is why there are so many different ways to do it. Microsoft .NET Web APIs returns JSON dates in standardized format by default, but the older versions of .Net framework may serialize the C# datetime object into a strange string format like /Date(1530144000000+0530)/ or /Date(1530144000000)/ . The number within the JSON Date string actually denotes the number on milliseconds that have passed since 01-01-1970 .

json date to javascript

JSON does not know anything about dates. What .NET does is a non-standard hack/extension. The problem with dates in JSON and really JavaScript in general – is that there's no equivalent literal representation for dates. In JavaScript following Date constructor straight away converts the milliseconds since 1970 to Date as follows:

Then let's convert it to js format:

The substr() function takes out the /Date( part, and the parseInt() function gets the integer and ignores the )/ at the end. The resulting number is passed into the Date constructor .

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Source Code

ISO-8601 formatted JSON dates

For ISO-8601 formatted JSON dates, just pass the string into the Date constructor:
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