Get the default value of a week field:
var x = document.getElementById("myWeek").defaultValue;
Click the button to display the default value of the week field.
input elements with type="week" are not supported in Internet Explorer or Firefox.
<!DOCTYPE html> <html> <body> <input type="week" id="myWeek" value="1995-W35"> <button type="button" onclick="myFunction()">Test</button> <p id="demo"></p> <script> function myFunction() {//from w ww .ja v a2 s. co m var x = document.getElementById("myWeek").defaultValue; document.getElementById("demo").innerHTML = x; } </script> </body> </html>