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.