change your input type like this.

<input type="datetime-local" name="Date" id="Date">

then use this js code to set current date.

var now = new Date();
now.setMinutes(now.getMinutes() - now.getTimezoneOffset());
document.getElementById('Date').value = now.toISOString().slice(0,16);

I think you should change your input tag’s type to datetime

<input type="datetime" id="Date" name="Date"/>

I have here a script to auto-input the current date on my input tag. However, I cannot add an auto timestamp like date.getHour(); as well. It’s not working when I tried doing this.

Please take a look at the script I’m using:

        var date = new Date();

        var day = date.getDate();
        var month = date.getMonth() + 1;
        var year = date.getFullYear();

        if (month < 10) month = "0" + month;
        if (day < 10) day = "0" + day;

        var today = year + "-" + month + "-" + day;


        document.getElementById('Date').value = today;

    <form id="saveNote">
    
        <textarea class="lined" id="textarea1" name="textarea1" spellcheck="true" placeholder="" onpaste="console.log('onpastefromhtml')"></textarea>

        <input type="date" id="Date" name="Date"/>

    </form>

    <button onclick="save()">Submit</button>

All I’m looking for is a simple solution that will add a timestamp at the end of the day like “1/12/2021 – 02:00 PM” or even in 24-hour format.

EDIT: Here’s my failed code:

var date = new Date();

var day = date.getDate();
var month = date.getMonth() + 1;
var year = date.getFullYear();
var hour = date.getHours()

if (month < 10) month = "0" + month;
if (day < 10) day = "0" + day;

var today = year + "-" + month + "-" + day + "-" + hour;


document.getElementById('Date').value = today;

Thanks in advance!