date.parse string to javascript

How to Use Date.parse() Function in JavaScript?

If you are working with JavaScript, you might have come across the use of the Date.parse() function. This function is used to parse a date string and convert it into a date object that can be used for calculations or comparisons.

What is Date.parse()?

Date.parse() is a built-in JavaScript function that takes a date string as input and converts it into a date object. The date string can be in various formats, such as:

• "2019-10-31"
• "10/31/2019"
• "October 31, 2019"
• "31 Oct 2019"

The function returns the number of milliseconds since January 1, 1970, 00:00:00 UTC, also known as the Unix Epoch. This number can be used to create a new date object or perform calculations.

Using Date.parse()

To use the Date.parse() function, you simply pass a date string as an argument:

var dateString = "10/31/2019";
var milliseconds = Date.parse(dateString);
console.log(milliseconds); //1572470400000
        

This code will output the number of milliseconds since the Unix Epoch for the date "10/31/2019".

Multiple Ways to Use Date.parse()

There are different ways to use Date.parse() depending on your requirements. Here are some examples:

• Passing a date string and a time string:

var dateString = "10/31/2019";
var timeString = "12:30 PM";
var datetimeString = dateString + " " + timeString;
var milliseconds = Date.parse(datetimeString);
console.log(milliseconds); //1572490200000
            

• Using ISO format:

var isoString = "2019-10-31T12:30:00";
var milliseconds = Date.parse(isoString);
console.log(milliseconds); //1572526200000
            

• Using UTC time zone:

var dateString = "10/31/2019";
var timeString = "12:30 PM";
var datetimeString = dateString + " " + timeString;
var milliseconds = Date.parse(datetimeString + " UTC");
console.log(milliseconds); //1572479400000
            

These are just a few examples of how you can use the Date.parse() function. You can experiment and find the format that suits your needs.