Free javascript Hosting


dragscroll.js

Uploaded on Oct 14 2021 00:13 by svoimidomislami

/**
* @fileoverview dragscroll - scroll area by dragging
* @version 0.0.8
*
* @license MIT, see http://github.com/asvd/dragscroll
* @copyright 2015 asvd <heliosframework@gmail.com>
*/


(function (root, factory) {
if (typeof define === 'function' && define.amd) {
define(['exports'], factory);
} else if (typeof exports !== 'undefined') {
factory(exports);
} else {
factory((root.dragscroll = {}));
}
}(this, function (exports) {
var _window = window;
var _document = document;
var mousemove = 'mousemove';
var mouseup = 'mouseup';
var mousedown = 'mousedown';
var EventListener = 'EventListener';
var addEventListener = 'add'+EventListener;
var removeEventListener = 'remove'+EventListener;
var newScrollX, newScrollY;

var dragged = [];
var reset = function(i, el) {
for (i = 0; i < dragged.length;) {
el = dragged[i++];
el = el.container || el;
el[removeEventListener](mousedown, el.md, 0);
_window[removeEventListener](mouseup, el.mu, 0);
_window[removeEventListener](mousemove, el.mm, 0);
}

// cloning into array since HTMLCollection is updated dynamically
dragged = [].slice.call(_document.getElementsByClassName('dragscroll'));
for (i = 0; i < dragged.length;) {
(function(el, lastClientX, lastClientY, pushed, scroller, cont){
(cont = el.container || el)[addEventListener](
mousedown,
cont.md = function(e) {
if (!el.hasAttribute('nochilddrag') ||
_document.elementFromPoint(
e.pageY, e.pageX
) == cont
) {
pushed = 1;
lastClientX = e.clientX;
lastClientY = e.clientY;

e.preventDefault();
}
}, 0
);

_window[addEventListener](
mouseup, cont.mu = function() {pushed = 0;}, 0
);

_window[addEventListener](
mousemove,
cont.mm = function(e) {
if (pushed) {
(scroller = el.scroller||el).scrollLeft -=
newScrollX = (- lastClientX + (lastClientX=e.clientX));
scroller.scrollTop -=
newScrollY = (- lastClientY + (lastClientY=e.clientY));
if (el == _document.body) {
(scroller = _document.documentElement).scrollLeft -= newScrollX;
scroller.scrollTop -= newScrollY;
}
}
}, 0
);
})(dragged[i++]);
}
}


if (_document.readyState == 'complete') {
reset();
} else {
_window[addEventListener]('load', reset, 0);
}

exports.reset = reset;
}));

Back to list