I want to add an attribute to a HTML element without a value using JQuery

<input id="r1" type="radio name="r1" value="1">

Add required

<input id="r1" type="radio name="r1" value="1" required>

How can this be done without the =""after the attribute?

I want to add an attribute to a HTML element without a value using JQuery

<input id="r1" type="radio name="r1" value="1">

Add required

<input id="r1" type="radio name="r1" value="1" required>

How can this be done without the =""after the attribute?

• javascript
• jquery
• html

• 1 don't worry about the ="", it's irrelevant just like the missing / – Kevin B Commented Jun 19, 2013 at 21:47
• $('input').attr('required',''); – Manish Mishra Commented Jun 19, 2013 at 21:48
• @KevinB I believe <DOCTYPE !html> would be required, tho. – Ohgodwhy Commented Jun 19, 2013 at 21:48
• why are there two id attributes – pid Commented Jun 19, 2013 at 21:51
• it's actually a boolean property and as such not required to have any value. You could add required='fred' and it would work the same. See :html5doctor./html5-forms-introduction-and-new-attributes – scrappedcola Commented Jun 19, 2013 at 21:56

1 Answer 1

The standard practice would be to set the property to true

$("#r1").prop("required", true);

This actually results in markup that exactly reads

<input id="r1" required>

JSFiddle demo: http://jsfiddle/8SrED/