How can I retrieve the date in the format of "2018-02-28" specifically in Ionic 3?

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You can use the built-in Date object in JavaScript to retrieve the current date and then format it according to your desired format. Here's an example code snippet to achieve that:

// Get the current date
let currentDate = new Date();

// Extract year, month, and day values
let year = currentDate.getFullYear();
let month = (currentDate.getMonth() + 1).toString().padStart(2, '0');
let day = currentDate.getDate().toString().padStart(2, '0');

// Format the date in "yyyy-mm-dd" format
let formattedDate = `${year}-${month}-${day}`;
console.log(formattedDate); // Output: "2022-10-05"

You can place this code within your Ionic 3 application wherever you want to retrieve and format the current date. Just note that the padStart method is used to add leading zeros to single-digit month and day values to ensure they are two digits long.