javascript原生移动drag效果之touch.drag.js

手机页面的上下左右拖动效果.
详情请阅读:https://git.oschina.net/wuquanyao/touch.drag.js
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//+ author:wuquanyao
//+ email:[e-mail]
//+ nickname:挪威森林
//+ touch.drag-1.0.0.js,测试版
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
var Touch = {};
(function(Touch){

//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//+ config参数{seletor:'',direction:1, factor:1}
//+ selector:css选择器;
//+ direction:0|1|2,0垂直方向,1水平方向,2综合方向;
//+ factor:弹性因子,0到1,值越大,阻尼越大
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Touch.drag = function(config){

config = config || {selector:'body',direction:1,factor:0.7};

var ele,

pos = {x:'',y:''},

press = {x:'',y:''},

events = ['touchstart','touchmove','touchend','touchcancel'];

ele = document.querySelector(config['selector']);

ele.addEventListener(events[0],function(event){

event.preventDefault();

pos['x'] = event.currentTarget.getBoundingClientRect().left;

pos['y'] = event.currentTarget.getBoundingClientRect().top;

press['x'] = event.touches[0].pageX;

press['y'] = event.touches[0].pageY;

},false);
ele.addEventListener(events[1],function(event){

event.preventDefault();

if(event.targetTouches.length>1)return false;

var move = {x:null,y:null};
//x>0向右，x move['x'] = (event.touches[0].pageX - press['x'])*(1-config.factor);
//y>0向上，y move['y'] = (event.touches[0].pageY - press['y'])*(1-config.factor);

switch(config.direction){

case 0: translate = 'translate(0,'+move['y']+'px)';
break;

case 1: translate = 'translate('+move['x']+'px,0)';
break;

case 2: translate = 'translate('+move['x']+'px,'+move['y']+'px)';
break;

default:translate = 'translate('+move['x']+'px,0)';
}

event.currentTarget.style.webkitTransform = translate;

},false);

ele.addEventListener(events[2],function(event){

event.preventDefault();

event.currentTarget.style.webkitTransform = 'translate('+pos['x']+'px,'+pos['y']+'px)';

},false);
}
})(Touch);

QQ截图20151027102555.png ( 150.15 KB 下载：35 次 )

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