DOM 'disabled' property in javascript

Question

I can\'t find a definitive answer to how to use the disabled property to disable form elements in javascript.

Some places say it\'s a simple boolean. Other\'s say to

Answer 1

The disabled attribute is a boolean. If the tag is present the input will be disabled. The confusion around having a string value associated with it usually comes from XHTML validation. In XHTML attribute minimization is forbidden, so it must have a value, and XHTML specification states it must be disabled="disabled".

For any browser, if the tag is present, the input will be disabled, regardless of the string value.

JsFiddle Demo

w3c disabled attribute spec