How to Extract the Time from a Unix Timestamp in JavaScript?

Extracting the Time from a Unix Timestamp in JavaScript

Unix timestamps, used to represent time values in MySQL databases, sometimes require extraction of just the time component for specific applications. To convert a Unix timestamp into time in JavaScript, follow these steps:

Step-by-Step Conversion

1. Create a JavaScript Date Object:

   let unix_timestamp = 1549312452;
   let date = new Date(unix_timestamp * 1000); // Convert to milliseconds

2. Extract Time Components:

   // Hours:
   const hours = date.getHours();
   
   // Minutes:
   const minutes = "0" + date.getMinutes(); // Pad zero if necessary
   
   // Seconds:
   const seconds = "0" + date.getSeconds(); // Pad zero if necessary

3. Format the Time:

   const formattedTime = hours + ':' + minutes.substr(-2) + ':' + seconds.substr(-2);

Example Code:

const unix_timestamp = 1549312452;

// Create a JavaScript Date object based on the timestamp
// multiplied by 1000 so that the argument is in milliseconds, not seconds
const date = new Date(unix_timestamp * 1000);

// Hours part from the timestamp
const hours = date.getHours();

// Minutes part from the timestamp
const minutes = "0" + date.getMinutes();

// Seconds part from the timestamp
const seconds = "0" + date.getSeconds();

// Will display time in 10:30:23 format
const formattedTime = hours + ':' + minutes.substr(-2) + ':' + seconds.substr(-2);

console.log(formattedTime);

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