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JSFiddle - React, Tailwind, and code Playground

JavaScript

function AddDays(days) {

            var thisDate = new Date();
            thisDate.setDate(thisDate.getDate() + days);
            var dd = ( thisDate.getFullYear() + '-' + ("0"+ (thisDate.getMonth() + 1)).slice(-2) + '-' + ( "0" + thisDate.getDate()).slice(-2) );
            return dd.toString('yyyy-MM-DD');;
        }
        alert(AddDays(465));

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JSFiddle - React, Tailwind, and code Playground

JavaScript

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