The JavaScript function for converting a date to a local string in the format of DD MMM YYYY is causing an error message in the browser console stating that it is not a valid function

I am encountering an issue with formatting a date string. The date is currently in the format 2021-03-31T00:00:00, and I need it to be displayed as 31 Mar 2021.

In my TypeScript code, I attempted to use the following function:

const formattedDate = i.SuspensionEndDate.toLocaleDateString('en-GB', { day: 'numeric', month: 'short', year: 'numeric' });

However, upon running the code in the browser, I received the following error in the console:

jQuery.Deferred exception: date.toLocaleDateString is not a function TypeError: date.toLocaleDateString is not a function

A similar error occurred when trying to extract only the day element using getDate():

const formattedDate = i.SuspensionEndDate.getDate();

jQuery.Deferred exception: date.getDate is not a function TypeError: date.getDate is not a function

This error is unfamiliar to me, as I have successfully performed similar tasks with JavaScript before. However, this is my first time encountering it while working on a .ts TypeScript file.

javascripttypescript

Answer №1

Make sure to convert the i.SuspensionEndDate variable into a Date object before formatting it.

const formattedDate = new Date(i.SuspensionEndDate).toLocaleDateString('en-GB', { day: 'numeric', month: 'short', year: 'numeric' });

Check out this example:

const currentDate = "2022-05-20T00:00:00";

const convertedDate = new Date(currentDate).toLocaleDateString('en-US', { weekday: 'long', year: 'numeric', month: 'long', day: 'numeric' });

console.log(convertedDate);

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