【发布时间】：2013-09-11 14:27:51
【问题描述】：
我一直在寻找解决方案以找出在移动浏览器上左右滑动并创建 lib（如下）。我的问题是：有没有一种简单的方法来检查 android 和 iOS 上的滑动？另外：我可以改用鼠标事件吗？
(function (lib, img, cjs) {
lib.touches = new Array();
(lib.setTouchListeners = function(gFilename) {
document.addEventListener("touchstart", function(event) {
// index to the last touch (always the last in the list)
var index = event.touches.length - 1;
// identifier - unique id of the touch (always the least free number on android but quite large number on iOS)
var iden = event.touches[index].identifier;
// save this touch for later comparison (checking if it moved etc.)
var t = {pageX:event.touches[index].pageX, pageY:event.touches[index].pageY, identifier:event.touches[index].identifier};
lib.touches.push(t);
},false);
document.addEventListener("touchmove", function(event) {
// prevent browser from using touch (move page up and down, resize by pinch)
event.preventDefault();
},false);
document.addEventListener("touchend", function(event) {
var len = event.changedTouches.length;
var iden = 0;
// check all changes although it's always one (but just in case something changes in future)
for(var i = 0; i < len; i++) {
iden = event.changedTouches[i].identifier;
// find that identifier in the saved list
for(var j = 0; j < lib.touches.length; j++) {
if (iden == lib.touches[j].identifier) {
var horizontalMove = event.changedTouches[i].pageX - lib.touches[j].pageX;
var verticalMove = event.changedTouches[i].pageY - lib.touches[j].pageY;
if (Math.abs(horizontalMove) > 50) {
if (horizontalMove > 0) {
console.log('right');
} else {
console.log('left');
}
}
if (Math.abs(verticalMove) > 50) {
if (verticalMove > 0) {
console.log('down');
} else {
console.log('up');
}
}
lib.touches.splice(j, 1);
break;
}
}
}
// event.preventDefault();
},false);
});
})(lib = lib||{}, images = images||{}, createjs = createjs||{});
var lib, images, createjs;
【问题讨论】：
标签： javascript android ios multi-touch touchstart