dragscroll/dragscroll.js

Tiny library for drag-n-drop scrolling style

!function(e,n){"function"==typeof define&&define.amd?define(["exports"],n):n("undefined"!=typeof exports?exports:e.dragscroll={})}(this,function(e){var n,t,o=window,l=document,c="mousemove",r="mouseup",i="mousedown",m="EventListener",d="add"+m,s="remove"+m,f=[],u=function(e,m){for(e=0;e<f.length;)m=f[e++],m=m.container||m,m[s](i,m.md,0),o[s](r,m.mu,0),o[s](c,m.mm,0);for(f=[].slice.call(l.getElementsByClassName("dragscroll")),e=0;e<f.length;)!function(e,m,s,f,u,a){(a=e.container||e)[d](i,a.md=function(n){e.hasAttribute("nochilddrag")&&l.elementFromPoint(n.pageX,n.pageY)!=a||(f=1,m=n.clientX,s=n.clientY,n.preventDefault())},0),o[d](r,a.mu=function(){f=0},0),o[d](c,a.mm=function(o){f&&((u=e.scroller||e).scrollLeft-=n=-m+(m=o.clientX),u.scrollTop-=t=-s+(s=o.clientY),e==l.body&&((u=l.documentElement).scrollLeft-=n,u.scrollTop-=t))},0)}(f[e++])};"complete"==l.readyState?u():o[d]("load",u,0),e.reset=u});