HTML

html date

<label for="meeting">Next meeting (August 2021):</label>
<input type="date" 
       id="meeting" 
       name="meeting"
       min="2021-08-01" 
       max="2021-08-31"
       defaultValue="2021-08-01">

html date input

<label for="start">Start date:</label>

<input type="date" id="start" name="trip-start"
       value="2018-07-22"
       min="2018-01-01" max="2018-12-31">

javascript date to html date input

// convert Javascript Date to HTML Input
var now = new Date();
var day = ("0" + now.getDate()).slice(-2);
var month = ("0" + (now.getMonth() + 1)).slice(-2);
var hour = ("0" + (now.getHours())).slice(-2);
var min = ("0" + (now.getMinutes())).slice(-2);
var today = now.getFullYear() + "-" + month + "-" + day + "T" + hour + ":" + min;

input type="date"

<input id="datePicker" type="date" />

input field html for date

<input type="date" >

input type="date"

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input id="datePicker" type="date" />
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date tag html

The <input type="date"> defines a date picker.
The resulting value includes the year, month, and day.
Tip: Always add the <label> tag for best accessibility practices!

<label for="birthday">Birthday:</label>
<input type="date" id="birthday" name="birthday">