JSFiddle - React, Tailwind, and code Playground

HTML

<table>
  <th>date</th><th>result</th>
  <tr><td class = "val">15/01/2015</td><td class="res"></td></tr>
  <tr><td class = "val">15/02/2015</td><td class="res"></td></tr>
  <tr><td class = "val">16/02/2015</td><td class="res"></td></tr>
  <tr><td class = "val">17/02/2015</td><td class="res"></td></tr>
  <tr><td class = "val">18/02/2015</td><td class="res"></td></tr>
  <tr><td class = "val">18/02/2016</td><td class="res"></td></tr>
</table>

JavaScript

$(".val").each(function (id) {
	validateNetworthDate($(this));
});

function validateNetworthDate(inputDate) {
	
        //var netWorthFlag = $("#NetworthDate").val();
        var netWorthFlag = inputDate.text();
        
        //netWorthFlag is coming( the date we entered) : "15/01/2015"

         var errorMsg='good date';

        var currentTime = new Date();
        var currentDay = currentTime.getDate();
        var currentMonth = currentTime.getMonth()+1; //As January is 0!
        var currentYear = currentTime.getFullYear();
        if(currentDay<10) {
            currentDay='0'+currentDay
        } 
        if(currentMonth<10) {
            currentMonth='0'+currentMonth
        } 


        var enteredDay=netWorthFlag.substr(0,2);
        var enteredMonth=netWorthFlag.substr(3,2);
        var enteredYear=netWorthFlag.substr(6,4);

        var enteredDateFormat=enteredYear+'/'+enteredMonth+'/'+enteredDay;

       //Now entered date should be : "2015/01/15"


        var enDate = new Date(enteredDateFormat);
        var yearAgoTime = new Date().setFullYear(currentTime.getFullYear()-1);
        
        var compDate = currentTime - enDate;
        if (compDate<0)
        {
            errorMsg="Future Date not allowed.";
        }
        var compDate2 = enDate - yearAgoTime;
        if (compDate2<0)
        {
            errorMsg="More than 1 year ago not allowed.";
        }
        //Can you please suggest that what should I write here to do validation that Date should not be older than 1 year from current date (Today's date) 
        inputDate.next("td").text(errorMsg);
    }