jquery-disablescroll

Author: Josh Harrison at Aloof

Disables scrolling from scrollbars, mousewheels, touchmoves and keypresses on a given scrollable element, typically $(window).

Use it while jQuery is animating the scroll position for a super-smooth ride!

Demo

http://jsfiddle.net/3n34qw6r/

Example Usage

var $window = $(window);

// Disable user scrolling just before animating scrollTop.
// Note that the `handleScrollbar` option must be false if you want to
// modify the scroll position whilst it is disabled.
$window.disablescroll({
    handleScrollbar: false
});

$("html, body").animate({ scrollTop: 500 }, "slow", function() {

    // Enable user scrolling again when animated scrolling completes
    $window.disablescroll("undo");

});

Options

Can be passed on first use:

$element.disablescroll({
    option : value
});

Option	Default Value	Description
handleWheel	true	Boolean indicating whether to disable mouse wheels.
handleScrollbar	true	Boolean indicating whether to disable scroll bar dragging. Set to false if you need to modify the scroll position whilst scrolling is disabled.
handleKeys	true	Boolean indicating whether to disable scrolling triggered by keypresses, e.g. the down button.
scrollEventKeys	[32, 33, 34, 35, 36, 37, 38, 39, 40]	Array of scroll-related keycodes to disable during scroll. See below for reference.

Keycode Reference

The following scroll-related keys are all included by default:

Keycode	Key
32	Spacebar
33	Page Up
34	Page Down
35	End
36	Home
37	Left Arrow
38	Up Arrow
39	Right Arrow
40	Down Arrow

Non-jQuery Usage

If you want to toy around with the object and its prototype, you can access it at window.UserScrollDisabler.

Compatibility

Tested in:

• Mac: Chrome 38
• Mac: Firefox 33.1
• Mac: Safari 7.1
• Windows: IE 7-11
• Windows: Chrome 38
• Windows: Firefox 33.1
• Android: Chrome 38
• iOS 7.1 and 8.1: Safari

Known Issues

• Mac Safari 7.1 is a bit flickery when dragging a disabled scrollbar.
• One report of IE flickering when dragging a disabled scrollbar, although I was unable to reproduce this.
• Not sure if there is a workaround for these flickering issues, as scrolling by dragging the scrollbar does not trigger any cancellable events. This only leaves us with the option of setting the scroll position back to what it was before on every scroll event. I'm surprised this doesn't flicker in more browsers.