JavaScript Answers

How to set date in input type date with JavaScript?

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You can set the date in an <input type="date"> element using JavaScript by setting the value attribute of the input element to a string representing the desired date in the format “YYYY-MM-DD”.

For example, we write:

<!DOCTYPE html>
<html lang="en">
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Set Date Input with JavaScript</title>
<label for="dateInput">Select a Date:</label>
<input type="date" id="dateInput">
<button onclick="setDate()">Set Date to Today</button>

function setDate() {
  const today = new Date();
  const year = today.getFullYear();
  const month = (today.getMonth() + 1).toString().padStart(2, '0'); // Month is zero-based
  const day = today.getDate().toString().padStart(2, '0');

  const dateString = `${year}-${month}-${day}`;
  document.getElementById('dateInput').value = dateString;

In this example, clicking the “Set Date to Today” button will set the value of the <input type="date"> element to today’s date.

The setDate() function constructs a string representing today’s date in the “YYYY-MM-DD” format and sets it as the value of the input element.

By John Au-Yeung

Web developer specializing in React, Vue, and front end development.

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