jquery.eventspolyfill.js

## jquery.eventspolyfill.js
(function ($) {

	if ($.fn.on === undefined) {
		$.fn.on = function (types, selector, data, fn) {

			var origFn, type;

			// Types can be a map of types/handlers
			if ( typeof types === "object" ) {
				// ( types-Object, selector, data )
				if ( typeof selector !== "string" ) {
					// ( types-Object, data )
					data = data || selector;
					selector = undefined;
				}
				for ( type in types ) {
					$.on( type, selector, data, types[ type ], one );
				}
				return this;
			}

			if ( data === null && fn === null ) {
				// ( types, fn )
				fn = selector;
				data = selector = undefined;
			} else if ( fn === null ) {
				if ( typeof selector === "string" ) {
					// ( types, selector, fn )
					fn = data;
					data = undefined;
				} else {
					// ( types, data, fn )
					fn = data;
					data = selector;
					selector = undefined;
				}
			}
			if ( fn === false ) {
				fn = returnFalse;
			} else if ( !fn ) {
				return this;
			}

			return this.each( function( types, selector, data, fn ) {
				jQuery.event.add( this, types, fn, data, selector );
			});
		};
	}


	if ($.fn.off === undefined) {
		$.fn.off = function () {
			var handleObj, type;
			if ( types && types.preventDefault && types.handleObj ) {
				// ( event )  dispatched jQuery.Event
				handleObj = types.handleObj;
				jQuery( types.delegateTarget ).off(
					handleObj.namespace ? handleObj.origType + "." + handleObj.namespace : handleObj.origType,
					handleObj.selector,
					handleObj.handler
				);
				return this;
			}
			if ( typeof types === "object" ) {
				// ( types-object [, selector] )
				for ( type in types ) {
					this.off( type, selector, types[ type ] );
				}
				return this;
			}
			if ( selector === false || typeof selector === "function" ) {
				// ( types [, fn] )
				fn = selector;
				selector = undefined;
			}
			if ( fn === false ) {
				fn = returnFalse;
			}
			return this.each(function() {
				jQuery.event.remove( this, types, fn, selector );
			});
		};
	}
}(jQuery));

## test.html
<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>jQuery.fn.on polyfill</title>
	</head>
	<body>
		<div class="message"></div>

		<a href="#" class="off">Remove Events</a>

		<script src="http://code.jquery.com/jquery-1.7.2.min.js"></script>
		<script src="jquery.eventspolyfill.js"></script>
		<script>
			$( document ).on( 'click', function () {
				$( '.message' ).text( 'clicked ' + ( +new Date() ) )
			});


			$( '.off' ).on( 'click', function () {
				$( document ).off( 'click' );
			});
		</script>

	</body>
</html>
	(function ($) {

	if ($.fn.on === undefined) {
	$.fn.on = function (types, selector, data, fn) {

	var origFn, type;

	// Types can be a map of types/handlers
	if ( typeof types === "object" ) {
	// ( types-Object, selector, data )
	if ( typeof selector !== "string" ) {
	// ( types-Object, data )
	data = data \|\| selector;
	selector = undefined;
	}
	for ( type in types ) {
	$.on( type, selector, data, types[ type ], one );
	}
	return this;
	}

	if ( data === null && fn === null ) {
	// ( types, fn )
	fn = selector;
	data = selector = undefined;
	} else if ( fn === null ) {
	if ( typeof selector === "string" ) {
	// ( types, selector, fn )
	fn = data;
	data = undefined;
	} else {
	// ( types, data, fn )
	fn = data;
	data = selector;
	selector = undefined;
	}
	}
	if ( fn === false ) {
	fn = returnFalse;
	} else if ( !fn ) {
	return this;
	}

	return this.each( function( types, selector, data, fn ) {
	jQuery.event.add( this, types, fn, data, selector );
	});
	};
	}


	if ($.fn.off === undefined) {
	$.fn.off = function () {
	var handleObj, type;
	if ( types && types.preventDefault && types.handleObj ) {
	// ( event ) dispatched jQuery.Event
	handleObj = types.handleObj;
	jQuery( types.delegateTarget ).off(
	handleObj.namespace ? handleObj.origType + "." + handleObj.namespace : handleObj.origType,
	handleObj.selector,
	handleObj.handler
	);
	return this;
	}
	if ( typeof types === "object" ) {
	// ( types-object [, selector] )
	for ( type in types ) {
	this.off( type, selector, types[ type ] );
	}
	return this;
	}
	if ( selector === false \|\| typeof selector === "function" ) {
	// ( types [, fn] )
	fn = selector;
	selector = undefined;
	}
	if ( fn === false ) {
	fn = returnFalse;
	}
	return this.each(function() {
	jQuery.event.remove( this, types, fn, selector );
	});
	};
	}
	}(jQuery));
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<title>jQuery.fn.on polyfill</title>
	</head>
	<body>
	<div class="message"></div>

	<a href="#" class="off">Remove Events</a>

	<script src="http://code.jquery.com/jquery-1.7.2.min.js"></script>
	<script src="jquery.eventspolyfill.js"></script>
	<script>
	$( document ).on( 'click', function () {
	$( '.message' ).text( 'clicked ' + ( +new Date() ) )
	});


	$( '.off' ).on( 'click', function () {
	$( document ).off( 'click' );
	});
	</script>

	</body>
	</html>