annotate src/DML/VendorAssetsBundle/Resources/assets/scrollfix/0.1/scrollfix.js @ 1:f38015048f48 tip

Added GPL
author Daniel Wolff
date Sat, 13 Feb 2016 20:43:38 +0100
parents 493bcb69166c
children
rev   line source
Daniel@0 1 /**
Daniel@0 2 * ScrollFix v0.1
Daniel@0 3 * http://www.joelambert.co.uk
Daniel@0 4 *
Daniel@0 5 * Copyright 2011, Joe Lambert.
Daniel@0 6 * Free to use under the MIT license.
Daniel@0 7 * http://www.opensource.org/licenses/mit-license.php
Daniel@0 8 */
Daniel@0 9
Daniel@0 10 var ScrollFix = function(elem) {
Daniel@0 11 // Variables to track inputs
Daniel@0 12 var startY, startTopScroll;
Daniel@0 13
Daniel@0 14 elem = elem || document.querySelector(elem);
Daniel@0 15
Daniel@0 16 // If there is no element, then do nothing
Daniel@0 17 if(!elem)
Daniel@0 18 return;
Daniel@0 19
Daniel@0 20 // Handle the start of interactions
Daniel@0 21 elem.addEventListener('touchstart', function(event){
Daniel@0 22 startY = event.touches[0].pageY;
Daniel@0 23 startTopScroll = elem.scrollTop;
Daniel@0 24
Daniel@0 25 if(startTopScroll <= 0)
Daniel@0 26 elem.scrollTop = 1;
Daniel@0 27
Daniel@0 28 if(startTopScroll + elem.offsetHeight >= elem.scrollHeight)
Daniel@0 29 elem.scrollTop = elem.scrollHeight - elem.offsetHeight - 1;
Daniel@0 30 }, false);
Daniel@0 31 };