jQuery Attributes Differece between attr() and prop()
Example
attr() gets/sets the HTML attribute using the DOM functions getAttribute() and setAttribute(). prop() works by setting the DOM property without changing the attribute. In many cases the two are interchangeable, but occasionally one is needed over the other.
To set a checkbox as checked:
$('#tosAccept').prop('checked', true); // using attr() won't work properly here
To remove a property you can use the removeProp() method. Similarly removeAttr() removes attributes.
