How to convert JSON results into a date using JavaScript?

JSON is a powerful data format to exchange data from server to client and vice versa. Many time JSON data is received in a String format and we need to convert it to a usable JSON object. In this process, it?s an important requirement to convert string data into Date format. In this article, we will learn how to convert JSON results into a Date string using Javascript.

The JSON objects contain the date like this ?

{
   name: "John",
   time: '/Date(1559072200000)/'
}

And the result will be ?

Wed May 29 2019 01:06:40 GMT+0530 (India Standard Time) 

Here are a few approaches to achieve this ?

• Using string.replace method

• Using Regex

Approach 1: Using String replace( ) Method

The replace method in JavaScript is used to replace a portion of a string with another string. Here are the steps to convert JSON results into a date using the String.replace method.

• Replace the first part of the string "/Date(" with an empty string

• Replace the last part of the string ")/" with an empty string

• Create a new Date object by parsing the number of milliseconds from the JSON string

• Now you got the Date and you can use it as a normal javascript date.

Example

In this example we are converting JSON results into a date using the String.replace() method.

 

   
Convert JSON results into a date using JavaScript
   
Click the following button to convert JSON results into a date
    Click Here  

   
Input Data : 
   
 /Date(1559072200000)/ 
   
 Resulting Date: 
   
 
   

Approach 2: Using Regex

Here are the following steps to convert JSON results into a date using regex.

• Extract the unix timestamp from the JSON date string using regex

• Create a new Date object by parsing the number of milliseconds from the JSON string

• Now you got the Date and you can use it as a normal javascript date.

   
Convert JSON results into a date using JavaScript
   
Click the following button to convert JSON results into a date
    Click Here  

   
Input Data : 
   
 /Date(1559072200000)/ 
   
 Resulting Date: