removeProp()

The .removeProp() method removes properties set by the .prop() method.

Additional Notes:
 

In Internet Explorer prior to version 9, using .prop() to set a DOM element property to anything other than a simple primitive value (number, string, or boolean) can cause memory leaks if the property is not removed (using .removeProp()) before the DOM element is removed from the document. To safely set values on DOM objects without memory leaks, use.data().
--> IE 9이전 버전에서는 메모리 누수가 발생할 수 있습니다. 메모리 누수없이 안전하게 변경할려면 .data() 를 사용해야합니다.

 

참조: http://api.jquery.com/removeProp/